Section 1 - Hawks

The exercises will be based on the Hawks dataset from the R package Stat2Data.

Students and faculty at Cornell College in Mount Vernon, Iowa, collected data over many years at the Lake MacBride Hawk Watch, near Iowa City, Iowa. The dataset analyzed here is a subset of the original dataset, including only species with more than 10 observations. The data were collected from random samples of three different hawk species: Red-tailed Hawk, Sharp-shinned Hawk, and Cooper’s Hawk.

We selected this dataset due to its similarity to the penguins dataset and its potential for applying unsupervised data mining algorithms.

if (!require('Stat2Data')) install.packages('Stat2Data')
library(Stat2Data)
data("Hawks")
summary(Hawks)
##      Month             Day             Year       CaptureTime   ReleaseTime 
##  Min.   : 8.000   Min.   : 1.00   Min.   :1992   11:35  : 14          :842  
##  1st Qu.: 9.000   1st Qu.: 9.00   1st Qu.:1995   13:30  : 14   11:00  :  2  
##  Median :10.000   Median :16.00   Median :1999   11:45  : 13   11:35  :  2  
##  Mean   : 9.843   Mean   :15.74   Mean   :1998   12:10  : 13   12:05  :  2  
##  3rd Qu.:10.000   3rd Qu.:23.00   3rd Qu.:2001   14:00  : 13   12:50  :  2  
##  Max.   :11.000   Max.   :31.00   Max.   :2003   13:05  : 12   13:32  :  2  
##                                                  (Other):829   (Other): 56  
##       BandNumber  Species  Age     Sex          Wing           Weight      
##            :  2   CH: 70   A:224    :576   Min.   : 37.2   Min.   :  56.0  
##  1142-09240:  1   RT:577   I:684   F:174   1st Qu.:202.0   1st Qu.: 185.0  
##  1142-09241:  1   SS:261           M:158   Median :370.0   Median : 970.0  
##  1142-09242:  1                            Mean   :315.6   Mean   : 772.1  
##  1142-18229:  1                            3rd Qu.:390.0   3rd Qu.:1120.0  
##  1142-19209:  1                            Max.   :480.0   Max.   :2030.0  
##  (Other)   :901                            NA's   :1       NA's   :10      
##      Culmen         Hallux            Tail        StandardTail  
##  Min.   : 8.6   Min.   :  9.50   Min.   :119.0   Min.   :115.0  
##  1st Qu.:12.8   1st Qu.: 15.10   1st Qu.:160.0   1st Qu.:162.0  
##  Median :25.5   Median : 29.40   Median :214.0   Median :215.0  
##  Mean   :21.8   Mean   : 26.41   Mean   :198.8   Mean   :199.2  
##  3rd Qu.:27.3   3rd Qu.: 31.40   3rd Qu.:225.0   3rd Qu.:226.0  
##  Max.   :39.2   Max.   :341.40   Max.   :288.0   Max.   :335.0  
##  NA's   :7      NA's   :6                        NA's   :337    
##      Tarsus        WingPitFat        KeelFat           Crop       
##  Min.   :24.70   Min.   :0.0000   Min.   :0.000   Min.   :0.0000  
##  1st Qu.:55.60   1st Qu.:0.0000   1st Qu.:2.000   1st Qu.:0.0000  
##  Median :79.30   Median :1.0000   Median :2.000   Median :0.0000  
##  Mean   :71.95   Mean   :0.7922   Mean   :2.184   Mean   :0.2345  
##  3rd Qu.:87.00   3rd Qu.:1.0000   3rd Qu.:3.000   3rd Qu.:0.2500  
##  Max.   :94.00   Max.   :3.0000   Max.   :4.000   Max.   :5.0000  
##  NA's   :833     NA's   :831      NA's   :341     NA's   :343

Data Cleaning

Present the dataset, including the column names and their meanings, as well as the distributions of their values.

We start by loading the necessary libraries for our analysis.

if (!require('cluster')) install.packages('cluster')
## Cargando paquete requerido: cluster
library(cluster)
if (!require('Stat2Data')) install.packages('Stat2Data')
library(Stat2Data)
if (!require('Stat2Data')) install.packages('Stat2Data')
if (!require('dplyr')) install.packages('dplyr')
## Cargando paquete requerido: dplyr
## 
## Adjuntando el paquete: 'dplyr'
## The following objects are masked from 'package:stats':
## 
##     filter, lag
## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union
library(dplyr)
if (!require('ggplot2')) install.packages("ggplot2")
## Cargando paquete requerido: ggplot2
library(ggplot2)
if (!require('factoextra')) install.packages("factoextra")
## Cargando paquete requerido: factoextra
## Welcome! Want to learn more? See two factoextra-related books at https://goo.gl/ve3WBa
library(factoextra)
if (!require('NbClust')) install.packages("NbClust")
## Cargando paquete requerido: NbClust
library(NbClust)
if (!require('dbscan')) install.packages('dbscan')
## Cargando paquete requerido: dbscan
## 
## Adjuntando el paquete: 'dbscan'
## The following object is masked from 'package:stats':
## 
##     as.dendrogram
library(dbscan)
if (!require('tidyr')) install.packages('tidyr')
## Cargando paquete requerido: tidyr
library(tidyr)

We perform a comprehensive summary to examine all variables in the dataset, including their quartiles.

This initial analysis is an essential preliminary step that is highly beneficial when working with datasets. By conducting this review, we can gain an overview of the data distribution, identify potential anomalies, and better understand the dataset’s underlying structure.

This allows us to make informed decisions in the subsequent steps.

data("Hawks")
summary(Hawks)
##      Month             Day             Year       CaptureTime   ReleaseTime 
##  Min.   : 8.000   Min.   : 1.00   Min.   :1992   11:35  : 14          :842  
##  1st Qu.: 9.000   1st Qu.: 9.00   1st Qu.:1995   13:30  : 14   11:00  :  2  
##  Median :10.000   Median :16.00   Median :1999   11:45  : 13   11:35  :  2  
##  Mean   : 9.843   Mean   :15.74   Mean   :1998   12:10  : 13   12:05  :  2  
##  3rd Qu.:10.000   3rd Qu.:23.00   3rd Qu.:2001   14:00  : 13   12:50  :  2  
##  Max.   :11.000   Max.   :31.00   Max.   :2003   13:05  : 12   13:32  :  2  
##                                                  (Other):829   (Other): 56  
##       BandNumber  Species  Age     Sex          Wing           Weight      
##            :  2   CH: 70   A:224    :576   Min.   : 37.2   Min.   :  56.0  
##  1142-09240:  1   RT:577   I:684   F:174   1st Qu.:202.0   1st Qu.: 185.0  
##  1142-09241:  1   SS:261           M:158   Median :370.0   Median : 970.0  
##  1142-09242:  1                            Mean   :315.6   Mean   : 772.1  
##  1142-18229:  1                            3rd Qu.:390.0   3rd Qu.:1120.0  
##  1142-19209:  1                            Max.   :480.0   Max.   :2030.0  
##  (Other)   :901                            NA's   :1       NA's   :10      
##      Culmen         Hallux            Tail        StandardTail  
##  Min.   : 8.6   Min.   :  9.50   Min.   :119.0   Min.   :115.0  
##  1st Qu.:12.8   1st Qu.: 15.10   1st Qu.:160.0   1st Qu.:162.0  
##  Median :25.5   Median : 29.40   Median :214.0   Median :215.0  
##  Mean   :21.8   Mean   : 26.41   Mean   :198.8   Mean   :199.2  
##  3rd Qu.:27.3   3rd Qu.: 31.40   3rd Qu.:225.0   3rd Qu.:226.0  
##  Max.   :39.2   Max.   :341.40   Max.   :288.0   Max.   :335.0  
##  NA's   :7      NA's   :6                        NA's   :337    
##      Tarsus        WingPitFat        KeelFat           Crop       
##  Min.   :24.70   Min.   :0.0000   Min.   :0.000   Min.   :0.0000  
##  1st Qu.:55.60   1st Qu.:0.0000   1st Qu.:2.000   1st Qu.:0.0000  
##  Median :79.30   Median :1.0000   Median :2.000   Median :0.0000  
##  Mean   :71.95   Mean   :0.7922   Mean   :2.184   Mean   :0.2345  
##  3rd Qu.:87.00   3rd Qu.:1.0000   3rd Qu.:3.000   3rd Qu.:0.2500  
##  Max.   :94.00   Max.   :3.0000   Max.   :4.000   Max.   :5.0000  
##  NA's   :833     NA's   :831      NA's   :341     NA's   :343

We observe that we will be working with measurements of various characteristics of hawks that have been captured and released.

In our dataset, we have several numerical variables, such as wing length and weight.

To better understand the structure of our dataset, we use the str function.

str(Hawks)
## 'data.frame':    908 obs. of  19 variables:
##  $ Month       : int  9 9 9 9 9 9 9 9 9 9 ...
##  $ Day         : int  19 22 23 23 27 28 28 29 29 30 ...
##  $ Year        : int  1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 ...
##  $ CaptureTime : Factor w/ 308 levels " ","1:15","1:31",..: 181 25 138 42 62 71 181 88 261 192 ...
##  $ ReleaseTime : Factor w/ 60 levels ""," ","10:20",..: 1 2 2 2 2 2 2 2 2 2 ...
##  $ BandNumber  : Factor w/ 907 levels " ","1142-09240",..: 856 857 858 809 437 280 859 860 861 281 ...
##  $ Species     : Factor w/ 3 levels "CH","RT","SS": 2 2 2 1 3 2 2 2 2 2 ...
##  $ Age         : Factor w/ 2 levels "A","I": 2 2 2 2 2 2 2 1 1 2 ...
##  $ Sex         : Factor w/ 3 levels "","F","M": 1 1 1 2 2 1 1 1 1 1 ...
##  $ Wing        : num  385 376 381 265 205 412 370 375 412 405 ...
##  $ Weight      : int  920 930 990 470 170 1090 960 855 1210 1120 ...
##  $ Culmen      : num  25.7 NA 26.7 18.7 12.5 28.5 25.3 27.2 29.3 26 ...
##  $ Hallux      : num  30.1 NA 31.3 23.5 14.3 32.2 30.1 30 31.3 30.2 ...
##  $ Tail        : int  219 221 235 220 157 230 212 243 210 238 ...
##  $ StandardTail: int  NA NA NA NA NA NA NA NA NA NA ...
##  $ Tarsus      : num  NA NA NA NA NA NA NA NA NA NA ...
##  $ WingPitFat  : int  NA NA NA NA NA NA NA NA NA NA ...
##  $ KeelFat     : num  NA NA NA NA NA NA NA NA NA NA ...
##  $ Crop        : num  NA NA NA NA NA NA NA NA NA NA ...

For our analysis, we use the dataset documentation available at
https://rdrr.io/rforge/Stat2Data/man/Hawks.html.

This source provides detailed and specific information about the attributes present in the dataset.

Variable Descriptions:

  • Month: Capture month code, where 8 = September and 12 = December.
  • Day: Day of the month when the hawk was captured.
  • Year: Capture year, ranging from 1992 to 2003.
  • CaptureTime: Time of capture in HH format.
  • ReleaseTime: Time of release in HH format.
  • BandNumber: ID band code assigned to the bird.
  • Species: Bird species:
    • CH = Cooper’s Hawk
    • RT = Red-tailed Hawk
    • SS = Sharp-shinned Hawk
  • Age: Age of the bird:
    • A = Adult
    • I = Immature
  • Sex: Sex of the bird:
    • F = Female
    • M = Male
    • Missing values indicate unknown sex.
  • Wing: Primary wing feather length (mm), measured from tip to wrist.
  • Weight: Body weight (grams).
  • Culmen: Upper bill length (mm), measured from tip to the fleshy part.
  • Hallux: Killing talon length (mm).
  • Tail: Tail length measurement (mm) (MacBride Raptor Center method).
  • StandardTail: Standard tail length measurement (mm).
  • Tarsus: Basic foot bone length (mm).
  • WingPitFat: Amount of fat in the wing pit.
  • KeelFat: Amount of fat on the breastbone (measured by touch).
  • Crop: Food content in the crop, coded 1 = full to 0 = empty.

Now, we continue preparing the dataset by searching for missing values.

missing_values <- colSums(is.na(Hawks))
print(missing_values)
##        Month          Day         Year  CaptureTime  ReleaseTime   BandNumber 
##            0            0            0            0            0            0 
##      Species          Age          Sex         Wing       Weight       Culmen 
##            0            0            0            1           10            7 
##       Hallux         Tail StandardTail       Tarsus   WingPitFat      KeelFat 
##            6            0          337          833          831          341 
##         Crop 
##          343

We begin cleaning the dataset.

Since we observe a high percentage of missing values in certain variables and considering that our dataset contains 918 records, the best option is to remove the following attributes:
StandardTail, Tarsus, WingPitFat, KeelFat, and Crop.

Afterward, we check for missing values again.

limpio_hawks <- Hawks[, !(names(Hawks) %in% c("StandardTail", "Tarsus", "WingPitFat", "KeelFat", "Crop"))]
missing_values2 <- colSums(is.na(limpio_hawks))
print(missing_values2)
##       Month         Day        Year CaptureTime ReleaseTime  BandNumber 
##           0           0           0           0           0           0 
##     Species         Age         Sex        Wing      Weight      Culmen 
##           0           0           0           1          10           7 
##      Hallux        Tail 
##           6           0

The number of missing values has significantly decreased.

Currently, the missing values are:
- Wing: 1 missing value
- Weight: 10 missing values
- Culmen: 7 missing values
- Hallux: 6 missing values

Following the methodology, we will attempt to impute these values to obtain a fully clean dataset.

We will start with the Wing variable, using mean values based on age and species.

We chose this attribute first since it only has one missing value, making it easier to apply the same method to the other variables.

First, we calculate the mean values based on species and age.

mean_wing <- Hawks %>%
  group_by(Species, Age) %>%
  summarise(mean_wing = mean(Wing, na.rm = TRUE), .groups = 'drop')

print(mean_wing)
## # A tibble: 6 × 3
##   Species Age   mean_wing
##   <fct>   <fct>     <dbl>
## 1 CH      A          242.
## 2 CH      I          246.
## 3 RT      A          386.
## 4 RT      I          383.
## 5 SS      A          186.
## 6 SS      I          185.

We identify the row corresponding to the NA value in the Wing attribute that we need to replace.

Since we know it belongs to an adult Cooper’s Hawk, and based on the previously calculated means, we determine that the average weight is 242.

na_wing_row <- Hawks[is.na(Hawks$Wing), ]
print(na_wing_row)
##     Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing
## 263    10  15 1995       14:20                             CH   A       NA
##     Weight Culmen Hallux Tail StandardTail Tarsus WingPitFat KeelFat Crop
## 263    480   17.7   32.1  198           NA     NA         NA      NA   NA

We impute the value 242.4839 to the missing value in the Wing attribute.

Hawks <- Hawks %>%
  mutate(Wing = ifelse(is.na(Wing), 242.4839, Wing))

Now, we merge the imputed values back into the original dataset to ensure data consistency.

We apply this imputation process to all variables with missing values.

mean_values <- Hawks %>%
  group_by(Species, Age) %>%
  summarise(
    mean_wing = mean(Wing, na.rm = TRUE),
    mean_weight = mean(Weight, na.rm = TRUE),
    mean_culmen = mean(Culmen, na.rm = TRUE),
    mean_hallux = mean(Hallux, na.rm = TRUE),
    .groups = 'drop'
  )

print("Medias calculadas por especie y edad:")
## [1] "Medias calculadas por especie y edad:"
print(mean_values)
## # A tibble: 6 × 6
##   Species Age   mean_wing mean_weight mean_culmen mean_hallux
##   <fct>   <fct>     <dbl>       <dbl>       <dbl>       <dbl>
## 1 CH      A          242.        450.        18.0        23.9
## 2 CH      I          246.        395.        17.2        21.9
## 3 RT      A          386.       1161.        27.5        31.1
## 4 RT      I          383.       1076.        26.8        32.2
## 5 SS      A          186.        150.        11.7        16.9
## 6 SS      I          185.        147.        11.4        14.2

With the mean values calculated for all attributes of our missing variables, we impute them just as we initially did with Wing, but now for the other three variables.

As a result, we no longer have missing data (except in the original variables, which we will remove in the next step).

Hawks <- Hawks %>%
  left_join(mean_values, by = c("Species", "Age")) %>%
  mutate(
    Wing = ifelse(is.na(Wing), mean_wing, Wing),
    Weight = ifelse(is.na(Weight), mean_weight, Weight),
    Culmen = ifelse(is.na(Culmen), mean_culmen, Culmen),
    Hallux = ifelse(is.na(Hallux), mean_hallux, Hallux)
  ) %>%
  select(-mean_wing, -mean_weight, -mean_culmen, -mean_hallux)  

missing_values_after_imputation <- colSums(is.na(Hawks))
print("Valores faltantes después de la imputación:")
## [1] "Valores faltantes después de la imputación:"
print(missing_values_after_imputation)
##        Month          Day         Year  CaptureTime  ReleaseTime   BandNumber 
##            0            0            0            0            0            0 
##      Species          Age          Sex         Wing       Weight       Culmen 
##            0            0            0            0            0            0 
##       Hallux         Tail StandardTail       Tarsus   WingPitFat      KeelFat 
##            0            0          337          833          831          341 
##         Crop 
##          343

We obtain our clean dataset, with no missing values, all imputations applied, and unnecessary variables removed.

hawks_limpio2 <- Hawks[, !(names(Hawks) %in% c("StandardTail", "Tarsus", "WingPitFat", "KeelFat", "Crop"))]
missing_values3 <- colSums(is.na(hawks_limpio2))
print(missing_values3)
##       Month         Day        Year CaptureTime ReleaseTime  BandNumber 
##           0           0           0           0           0           0 
##     Species         Age         Sex        Wing      Weight      Culmen 
##           0           0           0           0           0           0 
##      Hallux        Tail 
##           0           0

We perform a new summary of our clean dataset and reanalyze the variables to conduct an initial exploratory analysis.

summary(hawks_limpio2)
##      Month             Day             Year       CaptureTime   ReleaseTime 
##  Min.   : 8.000   Min.   : 1.00   Min.   :1992   11:35  : 14          :842  
##  1st Qu.: 9.000   1st Qu.: 9.00   1st Qu.:1995   13:30  : 14   11:00  :  2  
##  Median :10.000   Median :16.00   Median :1999   11:45  : 13   11:35  :  2  
##  Mean   : 9.843   Mean   :15.74   Mean   :1998   12:10  : 13   12:05  :  2  
##  3rd Qu.:10.000   3rd Qu.:23.00   3rd Qu.:2001   14:00  : 13   12:50  :  2  
##  Max.   :11.000   Max.   :31.00   Max.   :2003   13:05  : 12   13:32  :  2  
##                                                  (Other):829   (Other): 56  
##       BandNumber  Species  Age     Sex          Wing           Weight      
##            :  2   CH: 70   A:224    :576   Min.   : 37.2   Min.   :  56.0  
##  1142-09240:  1   RT:577   I:684   F:174   1st Qu.:202.0   1st Qu.: 185.0  
##  1142-09241:  1   SS:261           M:158   Median :370.0   Median : 970.0  
##  1142-09242:  1                            Mean   :315.6   Mean   : 770.5  
##  1142-18229:  1                            3rd Qu.:390.0   3rd Qu.:1120.0  
##  1142-19209:  1                            Max.   :480.0   Max.   :2030.0  
##  (Other)   :901                                                            
##      Culmen          Hallux            Tail      
##  Min.   : 8.60   Min.   :  9.50   Min.   :119.0  
##  1st Qu.:12.78   1st Qu.: 15.07   1st Qu.:160.0  
##  Median :25.50   Median : 29.40   Median :214.0  
##  Mean   :21.79   Mean   : 26.39   Mean   :198.8  
##  3rd Qu.:27.30   3rd Qu.: 31.40   3rd Qu.:225.0  
##  Max.   :39.20   Max.   :341.40   Max.   :288.0  
## 

At first glance, we can determine that the Weight variable shows a significant difference between the minimum and maximum values.

We calculate the standard deviation of the Weight variable to determine if there are outliers.

detect_outliers_sd <- function(data, column) {
  mean_value <- mean(data[[column]], na.rm = TRUE)
  sd_value <- sd(data[[column]], na.rm = TRUE)
  
  lower_bound <- mean_value - 3 * sd_value
  upper_bound <- mean_value + 3 * sd_value
  
  outliers <- data %>% filter(data[[column]] < lower_bound | data[[column]] > upper_bound)
  
  return(list(outliers = outliers, lower_bound = lower_bound, upper_bound = upper_bound))
}

result <- detect_outliers_sd(hawks_limpio2, "Weight")
outliers_weight_sd <- result$outliers
lower_bound <- result$lower_bound
upper_bound <- result$upper_bound

print("Outliers in the 'Weight' column using standard deviation:")
## [1] "Outliers in the 'Weight' column using standard deviation:"
print(outliers_weight_sd)
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
plot(hawks_limpio2$Weight, 
     main = "Weight Scatter Plot", 
     ylab = "Weight", 
     xlab = "Index",
     pch = ifelse(hawks_limpio2$Weight < lower_bound | hawks_limpio2$Weight > upper_bound, 19, 1), 
     col = ifelse(hawks_limpio2$Weight < lower_bound | hawks_limpio2$Weight > upper_bound, "red", "black"))

abline(h = c(lower_bound, upper_bound), col = "blue", lwd = 2, lty = 2)

We perform a second outlier analysis on foot size measurements, as the summary statistics indicate a significant difference between the minimum and maximum values.

This time, we observe 7 outliers.

detect_outliers_sd <- function(data, column) {
  mean_value <- mean(data[[column]], na.rm = TRUE)
  sd_value <- sd(data[[column]], na.rm = TRUE)
  
  lower_bound <- mean_value - 3 * sd_value
  upper_bound <- mean_value + 3 * sd_value
  
  outliers <- data %>% filter(data[[column]] < lower_bound | data[[column]] > upper_bound)
  
  outlier_count <- nrow(outliers)
  
  return(list(outliers = outliers, lower_bound = lower_bound, upper_bound = upper_bound, count = outlier_count))
}

result_hallux <- detect_outliers_sd(hawks_limpio2, "Hallux")
outliers_hallux_sd <- result_hallux$outliers
lower_bound_hallux <- result_hallux$lower_bound
upper_bound_hallux <- result_hallux$upper_bound
outlier_count_hallux_sd <- result_hallux$count

print("Outliers in the 'Hallux' column using standard deviation:")
## [1] "Outliers in the 'Hallux' column using standard deviation:"
print(outliers_hallux_sd)
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1     9  13 1993       14:25              173-19904      SS   I   M  193    100
## 2     9  15 1994       13:35             1387-79108      RT   I      410   1210
## 3     9  19 1994       12:58             1207-64604      RT   I      418   1180
## 4     9  20 1994       14:00             2003-58437      SS   A   F  198    188
## 5    11   2 1994       12:20             1207-64619      RT   I      401   1405
## 6    10  20 2000       12:38             1142-09241      SS   A   M  170    110
## 7     9   9 2001       11:51             1142-19244      SS   I   M  164     95
##   Culmen Hallux Tail
## 1    9.3  101.0  144
## 2   27.5  308.0  227
## 3   30.1  341.4  235
## 4   12.2  143.0  150
## 5   29.1   82.8  235
## 6   11.4  121.0  135
## 7   11.4  130.0  136
print(paste("Number of detected outliers:", outlier_count_hallux_sd))
## [1] "Number of detected outliers: 7"
plot(hawks_limpio2$Hallux, 
     main = "Hallux Scatter Plot", 
     ylab = "Hallux", 
     xlab = "Índex", 
     pch = ifelse(hawks_limpio2$Hallux < lower_bound_hallux | hawks_limpio2$Hallux > upper_bound_hallux, 19, 1), 
     col = ifelse(hawks_limpio2$Hallux < lower_bound_hallux | hawks_limpio2$Hallux > upper_bound_hallux, "red", "black"))

abline(h = c(lower_bound_hallux, upper_bound_hallux), col = "blue", lwd = 2, lty = 2)

Finally, to confirm our hypothesis, we perform the outlier analysis on the entire cleaned dataset.

We verify that only those 7 Hallux values are identified as outliers.

detect_outliers_sd <- function(data, column) {
  mean_value <- mean(data[[column]], na.rm = TRUE)
  sd_value <- sd(data[[column]], na.rm = TRUE)
  
  lower_bound <- mean_value - 3 * sd_value
  upper_bound <- mean_value + 3 * sd_value
  
  outliers <- data %>% filter(data[[column]] < lower_bound | data[[column]] > upper_bound)
  
  outlier_count <- nrow(outliers)
  
  return(list(outliers = outliers, lower_bound = lower_bound, upper_bound = upper_bound, count = outlier_count))
}

numeric_columns <- sapply(hawks_limpio2, is.numeric)  
outlier_results <- list() 

for (column_name in names(hawks_limpio2)[numeric_columns]) {
  result <- detect_outliers_sd(hawks_limpio2, column_name)
  outlier_results[[column_name]] <- result
}

for (column_name in names(outlier_results)) {
  cat(paste("Outliers in the column:", column_name, "\n"))
  print(outlier_results[[column_name]]$outliers)
  cat(paste("Number of detected outliers:", outlier_results[[column_name]]$count, "\n\n"))
  
  plot(hawks_limpio2[[column_name]], 
       main = paste("Scatter Plot of", column_name), 
       ylab = column_name, 
       xlab = "Index", 
       pch = ifelse(hawks_limpio2[[column_name]] < result$lower_bound | hawks_limpio2[[column_name]] > result$upper_bound, 19, 1), 
       col = ifelse(hawks_limpio2[[column_name]] < result$lower_bound | hawks_limpio2[[column_name]] > result$upper_bound, "red", "black"))
  
  abline(h = c(result$lower_bound, result$upper_bound), col = "blue", lwd = 2, lty = 2)
}
## Outliers in the column: Month 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

## Outliers in the column: Day 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

## Outliers in the column: Year 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

## Outliers in the column: Wing 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

## Outliers in the column: Weight 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

## Outliers in the column: Culmen 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

## Outliers in the column: Hallux 
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1     9  13 1993       14:25              173-19904      SS   I   M  193    100
## 2     9  15 1994       13:35             1387-79108      RT   I      410   1210
## 3     9  19 1994       12:58             1207-64604      RT   I      418   1180
## 4     9  20 1994       14:00             2003-58437      SS   A   F  198    188
## 5    11   2 1994       12:20             1207-64619      RT   I      401   1405
## 6    10  20 2000       12:38             1142-09241      SS   A   M  170    110
## 7     9   9 2001       11:51             1142-19244      SS   I   M  164     95
##   Culmen Hallux Tail
## 1    9.3  101.0  144
## 2   27.5  308.0  227
## 3   30.1  341.4  235
## 4   12.2  143.0  150
## 5   29.1   82.8  235
## 6   11.4  121.0  135
## 7   11.4  130.0  136
## Number of detected outliers: 7

## Outliers in the column: Tail 
##  [1] Month       Day         Year        CaptureTime ReleaseTime BandNumber 
##  [7] Species     Age         Sex         Wing        Weight      Culmen     
## [13] Hallux      Tail       
## <0 rows> (o 0- extensión row.names)
## Number of detected outliers: 0

Outlier attributes are identified in the same way as we did for missing values detection, but now focusing on outliers.

all_outliers <- data.frame()

for (column_name in names(hawks_limpio2)[numeric_columns]) {
  result <- outlier_results[[column_name]]  
  
  if (result$count > 0) {  
    cat(paste("Outliers in the column:", column_name, "\n"))
    print(result$outliers)  
    
    
    all_outliers <- bind_rows(all_outliers, result$outliers)
  }
}
## Outliers in the column: Hallux 
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1     9  13 1993       14:25              173-19904      SS   I   M  193    100
## 2     9  15 1994       13:35             1387-79108      RT   I      410   1210
## 3     9  19 1994       12:58             1207-64604      RT   I      418   1180
## 4     9  20 1994       14:00             2003-58437      SS   A   F  198    188
## 5    11   2 1994       12:20             1207-64619      RT   I      401   1405
## 6    10  20 2000       12:38             1142-09241      SS   A   M  170    110
## 7     9   9 2001       11:51             1142-19244      SS   I   M  164     95
##   Culmen Hallux Tail
## 1    9.3  101.0  144
## 2   27.5  308.0  227
## 3   30.1  341.4  235
## 4   12.2  143.0  150
## 5   29.1   82.8  235
## 6   11.4  121.0  135
## 7   11.4  130.0  136
cat("Complete rows of detected outliers:\n")
## Complete rows of detected outliers:
print(all_outliers)
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1     9  13 1993       14:25              173-19904      SS   I   M  193    100
## 2     9  15 1994       13:35             1387-79108      RT   I      410   1210
## 3     9  19 1994       12:58             1207-64604      RT   I      418   1180
## 4     9  20 1994       14:00             2003-58437      SS   A   F  198    188
## 5    11   2 1994       12:20             1207-64619      RT   I      401   1405
## 6    10  20 2000       12:38             1142-09241      SS   A   M  170    110
## 7     9   9 2001       11:51             1142-19244      SS   I   M  164     95
##   Culmen Hallux Tail
## 1    9.3  101.0  144
## 2   27.5  308.0  227
## 3   30.1  341.4  235
## 4   12.2  143.0  150
## 5   29.1   82.8  235
## 6   11.4  121.0  135
## 7   11.4  130.0  136

An attempt was made to remove the outlier rows, but it was unsuccessful

To address this, an internet search was conducted, leading to a study that performs outlier imputation ->
https://rpubs.com/Kamaranis/unsupervised_methods.

We applied the method from this study to our dataset, and it worked correctly.

media_hallux_especie_edad <- hawks_limpio2 %>%
  group_by(Species, Age) %>%
  summarise(media_hallux = mean(Hallux, na.rm = TRUE), .groups = 'drop')

all_outliers <- data.frame()

for (column_name in names(hawks_limpio2)[numeric_columns]) {
  result <- outlier_results[[column_name]]
  
  if (result$count > 0) {
    cat(paste("Outliers in the column:", column_name, "\n"))
    print(result$outliers)
    
    all_outliers <- bind_rows(all_outliers, result$outliers)
  }
}
## Outliers in the column: Hallux 
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1     9  13 1993       14:25              173-19904      SS   I   M  193    100
## 2     9  15 1994       13:35             1387-79108      RT   I      410   1210
## 3     9  19 1994       12:58             1207-64604      RT   I      418   1180
## 4     9  20 1994       14:00             2003-58437      SS   A   F  198    188
## 5    11   2 1994       12:20             1207-64619      RT   I      401   1405
## 6    10  20 2000       12:38             1142-09241      SS   A   M  170    110
## 7     9   9 2001       11:51             1142-19244      SS   I   M  164     95
##   Culmen Hallux Tail
## 1    9.3  101.0  144
## 2   27.5  308.0  227
## 3   30.1  341.4  235
## 4   12.2  143.0  150
## 5   29.1   82.8  235
## 6   11.4  121.0  135
## 7   11.4  130.0  136
cat("Complete rows of detected outliers:\n")
## Complete rows of detected outliers:
print(all_outliers)
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1     9  13 1993       14:25              173-19904      SS   I   M  193    100
## 2     9  15 1994       13:35             1387-79108      RT   I      410   1210
## 3     9  19 1994       12:58             1207-64604      RT   I      418   1180
## 4     9  20 1994       14:00             2003-58437      SS   A   F  198    188
## 5    11   2 1994       12:20             1207-64619      RT   I      401   1405
## 6    10  20 2000       12:38             1142-09241      SS   A   M  170    110
## 7     9   9 2001       11:51             1142-19244      SS   I   M  164     95
##   Culmen Hallux Tail
## 1    9.3  101.0  144
## 2   27.5  308.0  227
## 3   30.1  341.4  235
## 4   12.2  143.0  150
## 5   29.1   82.8  235
## 6   11.4  121.0  135
## 7   11.4  130.0  136
hallux_upper_limit <- 55.9  

for (i in 1:nrow(hawks_limpio2)) {
  
  if (hawks_limpio2$Hallux[i] > hallux_upper_limit) {
    mean_hallux <- media_hallux_especie_edad$media_hallux[
      media_hallux_especie_edad$Species == hawks_limpio2$Species[i] & 
      media_hallux_especie_edad$Age == hawks_limpio2$Age[i]
    ]
    hawks_limpio2$Hallux[i] <- mean_hallux
  }
}

remaining_outliers_hallux <- detect_outliers_sd(hawks_limpio2, "Hallux")
cat("Remaining outliers in Hallux after imputation:\n")
## Remaining outliers in Hallux after imputation:
print(remaining_outliers_hallux$outliers) 
##   Month Day Year CaptureTime ReleaseTime BandNumber Species Age Sex Wing Weight
## 1    10  16 1995       12:35             1387-79172      RT   I      387   1120
## 2    10   5 2002       14:27             1705-37416      CH   A   F  260    565
##   Culmen Hallux Tail
## 1   26.8   50.2  221
## 2   19.7   54.5  205

We verify that outliers have been successfully removed and that the imputation was correctly applied, using both a boxplot and a summary.

boxplot(hawks_limpio2$Hallux, 
        main = "Hallux", 
        ylab = "Spur Size (mm)", 
        outline = TRUE, 
        col = "lightblue")

abline(h = mean(hawks_limpio2$Hallux, na.rm = TRUE), col = "red", lty = 2)

summary(hawks_limpio2)
##      Month             Day             Year       CaptureTime   ReleaseTime 
##  Min.   : 8.000   Min.   : 1.00   Min.   :1992   11:35  : 14          :842  
##  1st Qu.: 9.000   1st Qu.: 9.00   1st Qu.:1995   13:30  : 14   11:00  :  2  
##  Median :10.000   Median :16.00   Median :1999   11:45  : 13   11:35  :  2  
##  Mean   : 9.843   Mean   :15.74   Mean   :1998   12:10  : 13   12:05  :  2  
##  3rd Qu.:10.000   3rd Qu.:23.00   3rd Qu.:2001   14:00  : 13   12:50  :  2  
##  Max.   :11.000   Max.   :31.00   Max.   :2003   13:05  : 12   13:32  :  2  
##                                                  (Other):829   (Other): 56  
##       BandNumber  Species  Age     Sex          Wing           Weight      
##            :  2   CH: 70   A:224    :576   Min.   : 37.2   Min.   :  56.0  
##  1142-09240:  1   RT:577   I:684   F:174   1st Qu.:202.0   1st Qu.: 185.0  
##  1142-09241:  1   SS:261           M:158   Median :370.0   Median : 970.0  
##  1142-09242:  1                            Mean   :315.6   Mean   : 770.5  
##  1142-18229:  1                            3rd Qu.:390.0   3rd Qu.:1120.0  
##  1142-19209:  1                            Max.   :480.0   Max.   :2030.0  
##  (Other)   :901                                                            
##      Culmen          Hallux           Tail      
##  Min.   : 8.60   Min.   : 9.50   Min.   :119.0  
##  1st Qu.:12.78   1st Qu.:15.00   1st Qu.:160.0  
##  Median :25.50   Median :29.40   Median :214.0  
##  Mean   :21.79   Mean   :25.21   Mean   :198.8  
##  3rd Qu.:27.30   3rd Qu.:31.40   3rd Qu.:225.0  
##  Max.   :39.20   Max.   :54.50   Max.   :288.0  
## 

Exploratory Data Analysis

After cleaning the dataset, we will analyze it using various visualizations to gain a general overview and start drawing preliminary conclusions.

For example, the most common species in our dataset is “RT” (Red-tailed Hawk).

ggplot(hawks_limpio2, aes(x = Species)) +
  geom_bar(fill = "skyblue") +
  labs(title = "Number of Birds by Species", x = "Species", y = "Number of Birds")

Species: Bird species classification:
- “CH” = Cooper’s Hawk
- “RT” = Red-tailed Hawk
- “SS” = Sharp-shinned Hawk

especies_count <- hawks_limpio2 %>%
  group_by(Species) %>%
  summarize(Count = n()) %>%
  arrange(desc(Count))

print(especies_count)
## # A tibble: 3 × 2
##   Species Count
##   <fct>   <int>
## 1 RT        577
## 2 SS        261
## 3 CH         70

We create a relationship between wing length and weight.

This graph is crucial, as we can already identify three distinct groups, providing an important clue that we may have three clusters.

However, we continue with the exploratory analysis.

ggplot(hawks_limpio2, aes(x = Wing, y = Weight, color = Species)) +
  geom_point(alpha = 0.5) +
  labs(title = "Relationship Between Wing Length and Weight", 
       x = "Wing Length (mm)", 
       y = "Weight (g)")

We analyze the number of birds captured per year and notice an anomaly in 1996.

After a brief investigation, we found that 1996 was one of the harshest winters on record, which could be a significant factor for the analysis.

Reference for the indicated data:
https://www.thegazette.com/curious-iowa/curious-iowa-when-did-iowa-have-record-setting-weather/

ggplot(hawks_limpio2, aes(x = Year)) +
  geom_bar(fill = "lightcoral") +
  labs(title = "Number of Birds Captured per Year", 
       x = "Year", 
       y = "Number of Birds")

We extract another key insight: most of the birds in our dataset are not of advanced age.

Can we conclude that mortality is very high at a certain age?

We lack additional data, such as the exact classification of age groups, but this remains a crucial point for deeper analysis.

ggplot(hawks_limpio2, aes(x = Species, fill = Age)) +
  geom_bar(position = "dodge") +
  labs(title = "Number of Adult and Immature Birds by Species", 
       x = "Species", 
       y = "Number of Birds")

We have another key insight supporting the idea that three clusters could be a great option.

The weight distribution clearly shows three distinct groups.

ggplot(hawks_limpio2, aes(x = Weight)) +
  geom_histogram(binwidth = 50, fill = "purple", color = "black") +
  labs(title = "Histogram of Bird Weight", 
       x = "Weight (g)", 
       y = "Frequency")

K-Means Clustering

We begin our K-Means study by selecting numerical variables, as K-Means can only handle numerical data.

We also include Sex and Age, even though they are categorical variables.

hawks_data <- hawks_limpio2 %>%
  select(Wing, Weight, Culmen, Hallux, Sex, Age)

hawks_data
##         Wing    Weight   Culmen   Hallux Sex Age
## 1   385.0000  920.0000 25.70000 30.10000       I
## 2   376.0000  930.0000 26.81197 32.23097       I
## 3   381.0000  990.0000 26.70000 31.30000       I
## 4   265.0000  470.0000 18.70000 23.50000   F   I
## 5   205.0000  170.0000 12.50000 14.30000   F   I
## 6   412.0000 1090.0000 28.50000 32.20000       I
## 7   370.0000  960.0000 25.30000 30.10000       I
## 8   375.0000  855.0000 27.20000 30.00000       A
## 9   412.0000 1210.0000 29.30000 31.30000       A
## 10  405.0000 1120.0000 26.00000 30.20000       I
## 11  393.0000 1010.0000 26.30000 30.80000       I
## 12  371.0000 1010.0000 25.40000 29.70000       I
## 13  390.0000 1120.0000 28.90000 30.90000       A
## 14  393.0000 1161.4132 28.20000 30.60000       A
## 15  416.0000 1170.0000 26.50000 34.00000       I
## 16  436.0000 1390.0000 30.50000 34.00000       A
## 17  418.0000 1150.0000 27.10000 31.00000       I
## 18  381.0000  950.0000 28.90000 28.90000       A
## 19  378.0000  910.0000 25.70000 28.20000       I
## 20  396.0000 1010.0000 24.00000 26.90000       I
## 21  399.0000 1070.0000 26.40000 31.20000       I
## 22  416.0000 1190.0000 28.80000 31.60000       I
## 23  415.0000  101.0000 24.90000 30.70000       I
## 24  392.0000 1330.0000 27.00000 30.30000       A
## 25  380.0000  990.0000 26.00000 30.00000       I
## 26  173.0000  100.0000 11.41111 14.24101   M   I
## 27  399.0000 1100.0000 26.20000 32.50000       I
## 28  401.0000 1190.0000 28.60000 31.60000       A
## 29  205.0000  180.0000 11.70000 15.00000   F   I
## 30  427.0000 1490.0000 30.10000 32.40000       I
## 31  395.0000 1040.0000 27.10000 31.40000       A
## 32  362.0000  820.0000 24.90000 27.90000       I
## 33  396.0000 1030.0000 26.00000 29.70000       A
## 34  391.0000 1300.0000 25.50000 32.40000       A
## 35  413.0000 1500.0000 26.50000 31.30000       A
## 36  371.0000 1080.0000 25.30000 27.20000       A
## 37  385.0000 1320.0000 27.30000 30.10000       A
## 38  378.0000 1490.0000 25.40000 31.30000       A
## 39  416.0000 1500.0000 29.10000 30.80000       A
## 40  193.0000  100.0000  9.30000 14.24101   M   I
## 41  171.0000   88.0000  9.70000 11.50000   M   I
## 42  233.0000  324.0000 16.00000 19.30000       I
## 43  384.0000 1060.0000 26.10000 31.20000       I
## 44  382.0000 1140.0000 25.10000 29.40000       I
## 45  390.0000 1030.0000 27.60000 30.30000       I
## 46  390.0000 1000.0000 25.10000 28.30000       I
## 47  393.0000 1050.0000 28.70000 29.80000       I
## 48  378.0000 1040.0000 26.20000 31.20000       I
## 49  398.0000 1110.0000 26.50000 30.90000       I
## 50  412.0000 1300.0000 27.90000 31.55000       I
## 51  400.0000  980.0000 25.70000 29.30000       I
## 52  422.0000 1120.0000 26.40000 28.30000       I
## 53  202.0000  134.0000 12.40000 13.70000   F   I
## 54  394.0000 1270.0000 27.80000 31.60000       I
## 55  369.0000  880.0000 25.00000 26.50000       I
## 56  252.0000  340.0000 16.00000 20.80000   F   I
## 57  240.0000  340.0000 16.10000 19.30000   M   A
## 58  410.0000 1255.0000 29.70000 31.40000       I
## 59  241.0000 1320.0000 28.60000 36.40000       I
## 60  408.0000 1320.0000 30.00000 33.40000       I
## 61   37.2000 1180.0000 20.20000 26.65000       I
## 62  380.0000  760.0000 24.50000 26.10000       I
## 63  396.0000 1250.0000 26.60000 32.50000       I
## 64  326.0000 1076.4590 25.20000 27.70000       I
## 65  158.0000  100.0000 10.80000 10.50000   M   I
## 66  416.0000 1300.0000 27.30000 32.70000       I
## 67  271.0000  475.0000 18.20000 24.75000   F   I
## 68  176.0000  100.0000  9.80000 11.10000   M   A
## 69  194.0000  150.3824 11.40000 14.20000   F   A
## 70  390.0000 1080.0000 30.20000 29.10000       A
## 71  391.0000 1130.0000 26.40000 29.40000       A
## 72  387.0000 1160.0000 26.80000 31.00000       A
## 73  420.0000 1345.0000 29.50000 34.30000       I
## 74  435.0000 1385.0000 32.60000 30.60000       A
## 75  400.0000 1210.0000 25.50000 28.60000       A
## 76  398.0000 1455.0000 28.00000 31.50000       I
## 77  395.0000 1180.0000 25.00000 28.90000       I
## 78  410.0000 1500.0000 27.10000 33.20000       I
## 79  369.0000 1025.0000 27.10000 31.50000       I
## 80  372.0000  930.0000 26.10000 31.10000       I
## 81  415.0000 1360.0000 28.60000 33.50000       I
## 82  412.0000 1255.0000 27.70000 32.60000       I
## 83  205.0000  194.0000 12.60000 14.40000   F   I
## 84  204.0000  159.0000 12.50000 14.80000   F   I
## 85  170.0000   90.0000  9.50000 11.30000   M   I
## 86  233.0000  340.0000 17.80000 19.40000   M   A
## 87  375.0000 1065.0000 25.90000 30.00000       I
## 88  385.0000 1125.0000 19.60000 31.40000       I
## 89  422.0000 1340.0000 28.70000 32.00000       I
## 90  391.0000 1050.0000 26.60000 32.20000       I
## 91  410.0000 1210.0000 27.50000 32.23097       I
## 92  385.0000  980.0000 26.80000 27.80000       I
## 93  381.0000 1000.0000 25.50000 29.80000       I
## 94  416.0000 1390.0000 28.10000 31.30000       A
## 95  406.0000 1275.0000 29.00000 33.70000       I
## 96  418.0000 1180.0000 30.10000 32.23097       I
## 97  412.0000 1210.0000 29.30000 33.80000       I
## 98  208.0000  168.0000 12.70000 14.80000   F   A
## 99  208.0000  146.0000 11.80000 14.90000   F   I
## 100 175.0000  108.0000 10.00000 11.50000   M   I
## 101 166.0000   94.0000  9.50000 11.30000   M   I
## 102 405.0000 1085.0000 27.70000 29.90000       I
## 103 198.0000  188.0000 12.20000 16.94493   F   A
## 104 200.0000  154.0000 12.40000 14.40000   F   I
## 105 380.0000  810.0000 25.90000 28.70000       I
## 106 381.0000  905.0000 27.90000 29.10000       I
## 107 169.0000   94.0000  9.00000 10.20000   M   I
## 108 260.0000  420.0000 19.60000 23.90000   F   I
## 109 428.0000 1240.0000 29.10000 34.70000       I
## 110 400.0000  990.0000 26.90000 31.40000       I
## 111 265.0000  365.0000 16.80000 22.50000   F   I
## 112 177.0000   91.0000 10.20000 11.30000   M   I
## 113 381.0000 1010.0000 25.80000 31.70000       I
## 114 403.0000  980.0000 26.30000 29.70000       I
## 115 382.0000  860.0000 26.50000 29.00000       I
## 116 382.0000  970.0000 25.80000 29.00000       I
## 117 399.0000  980.0000 27.50000 29.90000       I
## 118 380.0000  985.0000 23.90000 29.00000       I
## 119 375.0000  990.0000 25.60000 30.60000       I
## 120 420.0000 1210.0000 27.80000 32.60000       I
## 121 170.0000   89.0000  8.60000 11.00000   M   I
## 122 177.0000   97.0000 10.00000 11.30000   M   A
## 123 375.0000  990.0000 28.00000 29.50000       I
## 124 395.0000 1170.0000 28.10000 31.70000       I
## 125 170.0000   93.0000 10.10000 11.20000   M   A
## 126 406.0000 1350.0000 30.50000 32.00000       I
## 127 414.0000 1370.0000 29.30000 33.00000       I
## 128 173.0000  103.0000  9.70000 19.40000   M   I
## 129 209.0000  151.0000 12.20000 13.90000   F   I
## 130 177.0000  101.0000 10.30000 12.10000   M   I
## 131 388.0000  985.0000 26.90000 29.80000       I
## 132 277.0000  940.0000 26.50000 30.40000       I
## 133 423.0000 1310.0000 27.40000 34.10000       I
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## 592 390.0000 1195.0000 27.60000 34.70000       I
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## 594 365.0000 1025.0000 26.10000 30.30000       I
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## 881 382.0000 1140.0000 24.90000 31.60000       A
## 882 371.0000 1115.0000 25.30000 29.20000       A
## 883 370.0000 1145.0000 25.40000 30.20000       A
## 884 194.0000  185.0000 12.80000 14.80000   F   A
## 885 347.0000  990.0000 25.30000 29.80000       A
## 886 363.0000  945.0000 24.50000 32.23097       I
## 887 195.0000  165.0000 11.70000 14.50000   F   I
## 888 392.0000 1030.0000 26.30000 28.10000       A
## 889 220.0000  320.0000 15.50000 19.50000   M   I
## 890 193.0000  105.0000 13.00000 15.60000   F   I
## 891 365.0000  990.0000 26.40000 30.00000       I
## 892 387.0000 1065.0000 28.00000 32.70000       A
## 893 400.0000 1050.0000 26.10000 29.70000       I
## 894 362.0000  840.0000 23.20000 26.10000       I
## 895 198.0000  190.0000 12.20000 15.80000   F   I
## 896 190.0000  200.0000 12.70000 15.00000   F   I
## 897 197.0000  185.0000 12.80000 15.60000   F   I
## 898 370.0000 1000.0000 26.90000 31.40000       A
## 899 200.0000  185.0000 12.80000 15.20000   F   I
## 900 360.0000 1325.0000 26.20000 30.60000       A
## 901 366.0000  945.0000 25.30000 27.20000       A
## 902 402.0000 1350.0000 28.70000 31.00000       A
## 903 366.0000  805.0000 23.50000 25.70000       I
## 904 380.0000 1525.0000 26.00000 27.60000       I
## 905 190.0000  175.0000 12.70000 15.40000   F   I
## 906 360.0000  790.0000 21.90000 27.60000       I
## 907 369.0000  860.0000 25.20000 28.00000       I
## 908 199.0000 1290.0000 28.70000 32.10000       A

In our analysis, we selected two categorical variables to convert into numerical format using the dummy encoding method.

We assign binary values (0 and 1) to the Age categories (Adult = 1, Immature = 0) and Sex categories (Male = 1, Female = 0).

hawks_limpio2 <- hawks_limpio2 %>%
  mutate(
    Sex_M = ifelse(Sex == "M", 1, 0), 
    Sex_F = ifelse(Sex == "F", 1, 0),
    
    
    Age_A = ifelse(Age == "A", 1, 0),   
    Age_I = ifelse(Age == "I", 1, 0)    
  )

print(hawks_limpio2)
##     Month Day Year CaptureTime ReleaseTime  BandNumber Species Age Sex     Wing
## 1       9  19 1992       13:30               877-76317      RT   I     385.0000
## 2       9  22 1992       10:30               877-76318      RT   I     376.0000
## 3       9  23 1992       12:45               877-76319      RT   I     381.0000
## 4       9  23 1992       10:50               745-49508      CH   I   F 265.0000
## 5       9  27 1992       11:15              1253-98801      SS   I   F 205.0000
## 6       9  28 1992       11:25             1207-55910       RT   I     412.0000
## 7       9  28 1992       13:30               877-76320      RT   I     370.0000
## 8       9  29 1992       11:45               877-76321      RT   A     375.0000
## 9       9  29 1992       15:35               877-76322      RT   A     412.0000
## 10      9  30 1992       13:45              1207-55911      RT   I     405.0000
## 11     10   5 1992       13:30               877-76323      RT   I     393.0000
## 12     10   8 1992       13:45               877-76324      RT   I     371.0000
## 13     10   9 1992       12:30               877-76325      RT   A     390.0000
## 14     10  10 1992       11:05              1207-55917      RT   A     393.0000
## 15     10  11 1992       11:00              1207-55912      RT   I     416.0000
## 16     10  11 1992       11:45              1207-55913      RT   A     436.0000
## 17     10  11 1992       12:40               877-76326      RT   I     418.0000
## 18     10  11 1992       14:20               877-76327      RT   A     381.0000
## 19     10  12 1992       13:40               877-76328      RT   I     378.0000
## 20     10  13 1992       11:00               877-76329      RT   I     396.0000
## 21     10  13 1992       14:50               877-76330      RT   I     399.0000
## 22     10  14 1992       13:15               877-76331      RT   I     416.0000
## 23     10  17 1992       12:10               877-76332      RT   I     415.0000
## 24     10  22 1992       13:05               877-76333      RT   A     392.0000
## 25     10  23 1992       11:45               877-76334      RT   I     380.0000
## 26     10  23 1992       16:05              1173-19901      SS   I   M 173.0000
## 27     10  24 1992       14:35               877-76335      RT   I     399.0000
## 28     10  25 1992       12:05              1207-55914      RT   A     401.0000
## 29     10  27 1992       10:05              1253-98802      SS   I   F 205.0000
## 30     10  27 1992       10:45               608-48703      RT   I     427.0000
## 31     10  27 1992       15:15              1207-55915      RT   A     395.0000
## 32     10  30 1992       11:05               877-76336      RT   I     362.0000
## 33     11   3 1992       10:15              1207-55916      RT   A     396.0000
## 34     11   8 1992       11:45              1207-55918      RT   A     391.0000
## 35     11   8 1992       13:30              1207-55919      RT   A     413.0000
## 36     11  13 1992       10:45               987-53707      RT   A     371.0000
## 37     11  16 1992       11:15              1207-55920      RT   A     385.0000
## 38     11  21 1992       14:00               877-76337      RT   A     378.0000
## 39     11  22 1992       10:08              1207-55921      RT   A     416.0000
## 40      9  13 1993       14:25               173-19904      SS   I   M 193.0000
## 41      9  17 1993       15:25               193-19905      SS   I   M 171.0000
## 42      9  20 1993       13:45              120407-804      CH   I     233.0000
## 43      9  21 1993       15:11               877-76339      RT   I     384.0000
## 44      9  22 1993       13:50               877-76340      RT   I     382.0000
## 45      9  22 1993       15:55               877-76341      RT   I     390.0000
## 46      9  27 1993       12:15               877-76342      RT   I     390.0000
## 47      9  27 1993       13:00               877-76344      RT   I     393.0000
## 48      9  27 1993       13:20               877-76345      RT   I     378.0000
## 49      9  27 1993       15:03               877-76346      RT   I     398.0000
## 50      9  28 1993       11:50               877-76347      RT   I     412.0000
## 51      9  28 1993       12:45               877-76348      RT   I     400.0000
## 52      9  29 1993        9:53               877-76349      RT   I     422.0000
## 53      9  29 1993       10:25              1253-98803      SS   I   F 202.0000
## 54      9  29 1993       15:30               877-76350      RT   I     394.0000
## 55      9  30 1993       13:25               787-53708      RT   I     369.0000
## 56     10   1 1993       10:20               745-49512      CH   I   F 252.0000
## 57     10   1 1993       10:45               745-49513      CH   A   M 240.0000
## 58     10   3 1993       13:35              1207-55922      RT   I     410.0000
## 59     10   4 1993       11:25              1207-55923      RT   I     241.0000
## 60     10   7 1993       14:40              1207-55924      RT   I     408.0000
## 61     10   9 1993        9:38               877-76351      RT   I      37.2000
## 62     10   9 1993       10:20               877-76552      RT   I     380.0000
## 63     10  10 1993       11:25              1207-55927      RT   I     396.0000
## 64     10  10 1993       13:27               877-76353      RT   I     326.0000
## 65     10  11 1993       11:35              1173-19906      SS   I   M 158.0000
## 66     10  11 1993       14:00               877-76354      RT   I     416.0000
## 67     10  12 1993       13:15               745-49515      CH   I   F 271.0000
## 68     10  13 1993        9:23              1173-19907      SS   A   M 176.0000
## 69     10  14 1993       14:05              1373-35272      SS   A   F 194.0000
## 70     10  21 1993        9:20               877-76355      RT   A     390.0000
## 71     10  21 1993       15:30               877-76357      RT   A     391.0000
## 72     10  22 1993       16:35               877-76358      RT   A     387.0000
## 73     10  23 1993       13:05              1207-55941      RT   I     420.0000
## 74     10  25 1993       14:12               877-76359      RT   A     435.0000
## 75     10  26 1993       15:55               877-76360      RT   A     400.0000
## 76     10  31 1993       11:35              1207-55947      RT   I     398.0000
## 77     11   5 1993       11:00               877-76361      RT   I     395.0000
## 78     11  18 1993       10:37               877-76362      RT   I     410.0000
## 79      9   6 1994        9:55              1387-99101      RT   I     369.0000
## 80      9   6 1994       10:40              1387-99102      RT   I     372.0000
## 81      9   7 1994       12:27              1387-99104      RT   I     415.0000
## 82      9   7 1994       13:35              1387-99103      RT   I     412.0000
## 83      9   8 1994       12:10              1423-16201      SS   I   F 205.0000
## 84      9   9 1994        9:02              2003-58433      SS   I   F 204.0000
## 85      9   9 1994       10:47               872-09611      SS   I   M 170.0000
## 86      9  12 1994       11:24              1204-45804      CH   A   M 233.0000
## 87      9  12 1994       13:50              1387-97105      RT   I     375.0000
## 88      9  13 1994       11:58              1387-79106      RT   I     385.0000
## 89      9  15 1994       12:45              1207-64601      RT   I     422.0000
## 90      9  15 1994       13:20              1387-79107      RT   I     391.0000
## 91      9  15 1994       13:35              1387-79108      RT   I     410.0000
## 92      9  16 1994       10:23              1387-79109      RT   I     385.0000
## 93      9  16 1994       11:20              1387-79111      RT   I     381.0000
## 94      8  18 1994       12:05              1207-64602      RT   A     416.0000
## 95      9  18 1994       13:20              1207-64603      RT   I     406.0000
## 96      9  19 1994       12:58              1207-64604      RT   I     418.0000
## 97      9  19 1994       14:05              1207-64605      RT   I     412.0000
## 98      9  20 1994        9:05              2003-58435      SS   A   F 208.0000
## 99      9  20 1994        9:33              2003-58436      SS   I   F 208.0000
## 100     9  20 1994       11:04              1423-16203      SS   I   M 175.0000
## 101     9  20 1994       12:10              1423-16204      SS   I   M 166.0000
## 102     9  29 1994       13:55              1387-79112      RT   I     405.0000
## 103     9  20 1994       14:00              2003-58437      SS   A   F 198.0000
## 104     9  29 1994       14:45              2003-58438      SS   I   F 200.0000
## 105     9  21 1994       13:50              1387-79113      RT   I     380.0000
## 106     9  23 1994       11:48              1387-79114      RT   I     381.0000
## 107     9  26 1994       10:28               872-09612      SS   I   M 169.0000
## 108     9  26 1994       10:54              2206-35417      CH   I   F 260.0000
## 109     9  26 1994       12:10              1207-64606      RT   I     428.0000
## 110     9  26 1994       14:02              1207-64607      RT   I     400.0000
## 111     9  27 1994        8:00              1705-24603      CH   I   F 265.0000
## 112     9  27 1994       11:55              1423-16205      SS   I   M 177.0000
## 113     9  27 1994       15:40              1307-79115      RT   I     381.0000
## 114     9  28 1994        9:25              1387-79116      RT   I     403.0000
## 115     9  28 1994       11:10              1387-79117      RT   I     382.0000
## 116     9  28 1994       11:38              1387-79118      RT   I     382.0000
## 117     9  28 1994       13:02              1387-79119      RT   I     399.0000
## 118     9  29 1994       13:55              1387-79120      RT   I     380.0000
## 119     9  29 1994       13:16              1387-79121      RT   I     375.0000
## 120     9  30 1994       10:39              1207-64608      RT   I     420.0000
## 121    10   3 1994       11:13               872-09613      SS   I   M 170.0000
## 122    10   3 1994       13:07               872-09614      SS   A   M 177.0000
## 123    10   4 1994       13:37              1387-79122      RT   I     375.0000
## 124    10   4 1994       14:45              1207-64609      RT   I     395.0000
## 125    10   5 1994       11:55               872-09615      SS   A   M 170.0000
## 126    10   5 1994       13:55              1207-64610      RT   I     406.0000
## 127    10   5 1994       15:17              1207-64611      RT   I     414.0000
## 128    10   5 1994       16:00               872-09616      SS   I   M 173.0000
## 129    10   6 1994       10:45              2003-58439      SS   I   F 209.0000
## 130    10   6 1994       11:23               872-09617      SS   I   M 177.0000
## 131    10   7 1994       10:50              1387-79123      RT   I     388.0000
## 132    10   7 1994       11:24              1387-79124      RT   I     277.0000
## 133    10   7 1994       12:15              1207-64612      RT   I     423.0000
## 134    10   7 1994       15:40              1387-79125      RT   I     365.0000
## 135    10   7 1994       16:35              1387-79126      RT   I     383.0000
## 136    10  10 1994       11:02              1387-79127      RT   I     391.0000
## 137    10  10 1994       12:01              1387-79128      RT   I     389.0000
## 138    10  10 1994       12:23              1387-79129      RT   I     392.0000
## 139    10  10 1994       13:10              1387-79130      RT   I     375.0000
## 140    10  10 1994       13:50              1207-64613      RT   I     410.0000
## 141    10  10 1994       15:07               872-09618      SS   I   M 179.0000
## 142    10  11 1994        8:52               872-09619      SS   I   M 172.0000
## 143    10  11 1994       12:36              2003-58440      SS   A   F 202.0000
## 144    10  12 1994       11:15              1423-16206      SS   I   M 174.0000
## 145    10  13 1994       13:05              1207-64614      RT   I     422.0000
## 146    10  13 1994       14:00              1387-79131      RT   I     385.0000
## 147    10  16 1994       12:05              1387-79132      RT   I     363.0000
## 148    10  16 1994       11:30              1207-64615      RT   I     450.0000
## 149    10  18 1994       10:00              1287-79133      RT   I     380.0000
## 150    10  18 1994       12:35              1387-79134      RT   I     385.0000
## 151    10  18 1994       13:30              1387-79135      RT   I     385.0000
## 152    10  19 1994        9:08               872-09620      SS   I   M 171.0000
## 153    10  19 1994       10:46              1387-79136      RT   I     380.0000
## 154    10  19 1994       11:27              1387-79137      RT   I     384.0000
## 155    10  19 1994       12:15              1387-79138      RT   I     373.0000
## 156    10  19 1994       12:55              1387-79139      RT   I     381.0000
## 157    10  19 1994       13:35              1387-79140      RT   I     363.0000
## 158    10  19 1994       13:50              1387-79141      RT   I     409.0000
## 159    10  20 1994       12:00              1387-79142      RT   A     390.0000
## 160    10  21 1994       10:12              2003-58441      SS   I   F 204.0000
## 161    10  22 1994       14:45              1423-16207      SS   I   F 197.0000
## 162    10  23 1994       11:06              1387-79143      RT   I     420.0000
## 163    10  23 1994       11:36              1387-79144      RT   I     381.0000
## 164    10  23 1994       13:09              1207-64616      RT   I     408.0000
## 165    10  23 1994       14:25              1387079145      RT   I     388.0000
## 166    10  23 1994       15:00              1387-79146      RT   A     398.0000
## 167    10  24 1994        9:05              1423-16208      SS   I   F 209.0000
## 168    10  25 1994       10:25              2003-58442      SS   I   F 209.0000
## 169    10  25 1994       14:00             1387-079147      RT   A     394.0000
## 170    10  25 1994       14:19              1423-11209      SS   A   F 204.0000
## 171    10  26 1994        9.12              1423-16210      SS   I   F 204.0000
## 172    10  26 1994       10:29              2003-58443      SS   I   F 209.0000
## 173    10  26 1994       11:39              1387-79148      RT   I     394.0000
## 174    10  26 1994       14:55              1207-64617      RT   I     416.0000
## 175    10  26 1994       15:40              1207-64618      RT   I     445.0000
## 176    10  27 1994        9:15              2003-58444      SS   I   F 209.0000
## 177    10  27 1994       10:55              1387-79149      RT   I     388.0000
## 178    10  27 1994       11:50              1387-79150      RT   I     397.0000
## 179    10  27 1994       12:24              1387-79151      RT   I     384.0000
## 180    10  27 1994       13:37              1387-79152      RT   I     379.0000
## 181    10  28 1994       10:05              1387-79199      RT   I     393.0000
## 182    10  28 1994       10:45              1387-79153      RT   I     386.0000
## 183    10  29 1994       11:05              1387-79154      RT   I     397.0000
## 184    10  29 1994       11:50              1387-79155      RT   I     382.0000
## 185    11   1 1994       10:45              1387-79156      RT   I     386.0000
## 186    11   1 1994       11:21              1387-79157      RT   I     417.0000
## 187    11   2 1994       11:41              1387-79158      RT   I     403.0000
## 188    11   2 1994       12:26              1204-45805      CH   A   M 239.0000
## 189    11   2 1994       12:20              1207-64619      RT   I     401.0000
## 190    11   2 1994       14:52              1387-79159      RT   A     377.0000
## 191    11   6 1994        9:55              1207-64620      RT   A     432.0000
## 192    11   6 1994       10:30              1207-64621      RT   I     390.0000
## 193    11   6 1994       11:40              1387-79160      RT   I     381.0000
## 194    11   7 1994       11:22              1387-79161      RT   I     403.0000
## 195    11   7 1994       12:47              1423-16211      SS   I   F 213.0000
## 196    11   9 1994        9:46               872-09621      SS   I   M 172.0000
## 197    11   9 1994       15:02              1807-53101      RT   I     390.0000
## 198    11  11 1994       10:00              1423-16212      SS   I   F 204.0000
## 199    11  11 1994       11:59              1387-79162      RT   A     386.0000
## 200    11  11 1994       14:42              1387-79163      RT   I     402.0000
## 201    11  11 1994       15:01              1423-16213      SS   I   F 201.0000
## 202    11  11 1994       15:23              1423-16214      SS   I   F 202.0000
## 203    11  15 1994       11:40              1387-79164      RT   A     374.0000
## 204    11  16 1994       11:15              1807-53103      RT   I     358.0000
## 205    11  16 1994       12:19              1387-79165      RT   I     370.0000
## 206    11  21 1994       10:40              1387-79166      RT   I     390.0000
## 207    11  21 1994       13:33              1387-79167      RT   I     398.0000
## 208     9   8 1995       13:30                1387-170      RT   I     360.0000
## 209     9   8 1995       14:20              1387-79171      RT   I     355.0000
## 210     9  13 1995       14:30              1207-64623      RT   A     375.0000
## 211     9  13 1995       14:45              2003-59463      SS   I   F 200.0000
## 212     9  14 1995       10:05               972-09622      SS   I   M 179.0000
## 213     9  15 1995        9:40              2003-58464      SS   I   M 175.0000
## 214     9  15 1995        9:50              2003-58465      SS   I   F 203.0000
## 215     9  15 1995       11:05              2003-58466      SS   I   F 205.0000
## 216     9  17 1995       11:20              1343-78401      SS   I   F 213.0000
## 217     9  17 1995       12:15              1387-79173      RT   I     409.0000
## 218     9  17 1995       14:58              1343-78402      SS   I   F 202.0000
## 219     9  18 1995       14:20              1343-78403      SS   I   F 195.0000
## 220     9  18 1995       15:10              1207-64624      RT   I     415.0000
## 221     9  19 1995       10:05              1204-45806      CH   A   M 236.0000
## 222     9  20 1995       10:50              1387-79174      RT   I     363.0000
## 223     9  23 1995       10:10              1387-79175      RT   I     381.0000
## 224     9  26 1995       11:05              1387-79176      RT   A     350.0000
## 225     9  26 1995       13:03              1387-79177      RT   I     398.0000
## 226     9  26 1995       12:55              1207-64625      RT   I     412.0000
## 227     9  26 1995       13:55              2003-58467      SS   I   F 203.0000
## 228     9  27 1995        9:40              2003-58468      SS   I   F 201.0000
## 229     9  27 1995       12:50              1387-79178      RT   I     411.0000
## 230     9  27 1995       13:55              1807-53104      RT   I     373.0000
## 231    10   1 1995       10:15              1423-16221      SS   I   M 178.0000
## 232    10   1 1995       12:04              1207-64626      RT   I     415.0000
## 233    10   1 1995       12:50              1387-79179      RT   I     383.0000
## 234    10   2 1995       13:55              1705-24606      CH   I   M 223.0000
## 235    10   3 1995       11:20              1387-79180      RT   I     390.0000
## 236    10   3 1995       11:45              1387-79181      RT   I     390.0000
## 237    10   4 1995       12:20              1387-79182      RT   A     365.0000
## 238    10   4 1995       12:54              1387-79183      RT   A     345.0000
## 239    10   5 1995       11:08              1705-24607      CH   I   F 273.0000
## 240    10   6 1995       12:15              1207-64627      RT   I     400.0000
## 241    10   6 1995       12:36              1207-64628      RT   I     380.0000
## 242    10   6 1995       13:05              1207-79184      RT   I     330.0000
## 243    10   6 1995       13:10              1207-64629      RT   I     410.0000
## 244    10   7 1995       12:00              1387-79185      RT   I     313.0000
## 245    10   9 1995       11:35              1387-79186      RT   I     384.0000
## 246    10   9 1995       11:50              1207-64660      RT   I     409.0000
## 247    10   9 1995       12:50              1387-79187      RT   I     390.0000
## 248    10  10 1995       11:50              1207-64630      RT   I     411.0000
## 249    10  10 1995       14:25              1705-24608      CH   I   F 259.0000
## 250    10  11 1995       14:25              1387-79188      RT   A     380.0000
## 251    10  11 1995       14:25              1387-79189      RT   I     370.0000
## 252    10  11 1995       13:15              1387-79190      RT   I     415.0000
## 253    10  12 1995       10:37              1204-45807      SS   I   F 215.0000
## 254    10  12 1995       13:20              1387-79191      RT   I     410.0000
## 255    10  12 1995       14:20              1387-79192      RT   I     412.0000
## 256    10  12 1995       14:30              1207-64631      RT   A     384.0000
## 257    10  13 1995       12:05              1207-64632      RT   I     404.0000
## 258    10  13 1995       13:00              1387-79193      RT   I     375.0000
## 259    10  13 1995       15:00              1387-79794      RT   I     410.0000
## 260    10  14 1995       10:05              1387-79195      RT   I     384.0000
## 261    10  14 1995       13:25              1207-64634      RT   I     385.0000
## 262    10  14 1995       13:40              1387-79196      RT   I     398.0000
## 263    10  15 1995       14:20                              CH   A     242.4839
## 264    10  15 1995       14:30              1387-79197      RT   I     425.0000
## 265    10  15 1995       15:00              1397-79198      RT   I     401.0000
## 266    10  16 1995       12:35              1387-79172      RT   I     387.0000
## 267    10  16 1995       13:33              1807-53105      RT   I     376.0000
## 268    10  17 1995       11:10              1423-16223      SS   A   M 171.0000
## 269    10  17 1995       11:45              1207-64635      RT   A     420.0000
## 270    10  18 1995       12:20               877-76379      RT   I     385.0000
## 271    10  18 1995       13:05              2107-64631      RT   I     405.0000
## 272    10  18 1995       13:15              1807-53107      RT   I     350.0000
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## 856    10   7 2003       11:58              1207-72682      RT   I     400.0000
## 857    10   7 2003       12:10              2003-99370      SS   A   F 194.0000
## 858    10   7 2003       12:49              1807-53140      RT   I     370.0000
## 859    10   8 2003       10:31              1142-19285      SS   I   M 160.0000
## 860    10   8 2003       11:08              1207-72683      RT   I     403.0000
## 861    10   8 2003       12:28              1177-04757      RT   I     375.0000
## 862    10   8 2003       14:48              1177-04758      RT   I     373.0000
## 863    10  10 2003       11:43              1177-04759      RT   I     385.0000
## 864    10  12 2003       10:10              2003-99371      SS   I   F 143.0000
## 865    10  12 2003       11:30              1142-19286      SS   I   M 162.0000
## 866    10  12 2003       12:10              1207-72684      RT   I     392.0000
## 867    10  12 2003       13:15              1807-53141      RT   I     372.0000
## 868    10  13 2003       12:00              1177-04760      RT   I     375.0000
## 869    10  13 2003                          1207-72685      RT   I     415.0000
## 870    10  14 2003       10:53              1142-19287      SS   A   M 161.0000
## 871    10  14 2003       12:24              1177-04761      RT   A     380.0000
## 872    10  18 2003       12:45               788-36611      RT   A     411.0000
## 873    10  21 2003        9:08              1142-19288      SS   A   M 161.0000
## 874    10  21 2003       10:19              1142-19289      SS   I   M 165.0000
## 875    10  21 2003       11:35              1207-72686      RT   I     393.0000
## 876    10  21 2003       13:02              1177-04762      RT   I     370.0000
## 877    10  22 2003       12:19              1204-45885      CH   A   M 230.0000
## 878    10  25 2003       11:07              1177-04763      RT   I     365.0000
## 879    10  25 2003       11:53              1177-04764      RT   I     371.0000
## 880    10  25 2003       12:47              1207-72687      RT   I     400.0000
## 881    10  25 2003       12:55              1177-04765      RT   A     382.0000
## 882    10  25 2003       13:27              1807-53142      RT   A     371.0000
## 883    10  25 2003       13:40              1177-04766      RT   A     370.0000
## 884    10  26 2003       11:35              2003-99372      SS   A   F 194.0000
## 885    10  26 2003       12:15              1177-04767      RT   A     347.0000
## 886    10  30 2003       10:40              1177-04768      RT   I     363.0000
## 887    10  30 2003       13:13              1213-58909      SS   I   F 195.0000
## 888    10  30 2003       13:35              1177-04769      RT   A     392.0000
## 889    10  31 2003       11:20              1204-45886      CH   I   M 220.0000
## 890    11   6 2003       10:06              2003-99373      SS   I   F 193.0000
## 891    11   6 2003       13:02              1177-04770      RT   I     365.0000
## 892    11   7 2003       12:30              1177-04771      RT   A     387.0000
## 893    11   7 2003       13:45              1177-04772      RT   I     400.0000
## 894    11   8 2003       13:01              1801-53143      RT   I     362.0000
## 895    11   9 2003       12:00               803-05944      SS   I   F 198.0000
## 896    11   9 2003       13:31              2003-99374      SS   I   F 190.0000
## 897    11  11 2003       10:15              2003-99375      SS   I   F 197.0000
## 898    11  13 2003       14:00              1177-04773      RT   A     370.0000
## 899    11  14 2003       13:35              1213-58910      SS   I   F 200.0000
## 900    11  17 2003       10:19              1177-04774      RT   A     360.0000
## 901    11  18 2003       13:29              1177-04775      RT   A     366.0000
## 902    11  18 2003       13:45              1177-04776      RT   A     402.0000
## 903    11  18 2003       14:07              1207-53144      RT   I     366.0000
## 904    11  18 2003       14:44              1177-04777      RT   I     380.0000
## 905    11  19 2003       10:18               803-05985      SS   I   F 190.0000
## 906    11  19 2003       12:02              1807-53145      RT   I     360.0000
## 907    11  20 2003        9:56              1177-04778      RT   I     369.0000
## 908    11  20 2003       13:30              1207-53145      RT   A     199.0000
##        Weight   Culmen   Hallux Tail Sex_M Sex_F Age_A Age_I
## 1    920.0000 25.70000 30.10000  219     0     0     0     1
## 2    930.0000 26.81197 32.23097  221     0     0     0     1
## 3    990.0000 26.70000 31.30000  235     0     0     0     1
## 4    470.0000 18.70000 23.50000  220     0     1     0     1
## 5    170.0000 12.50000 14.30000  157     0     1     0     1
## 6   1090.0000 28.50000 32.20000  230     0     0     0     1
## 7    960.0000 25.30000 30.10000  212     0     0     0     1
## 8    855.0000 27.20000 30.00000  243     0     0     1     0
## 9   1210.0000 29.30000 31.30000  210     0     0     1     0
## 10  1120.0000 26.00000 30.20000  238     0     0     0     1
## 11  1010.0000 26.30000 30.80000  222     0     0     0     1
## 12  1010.0000 25.40000 29.70000  217     0     0     0     1
## 13  1120.0000 28.90000 30.90000  213     0     0     1     0
## 14  1161.4132 28.20000 30.60000  238     0     0     1     0
## 15  1170.0000 26.50000 34.00000  243     0     0     0     1
## 16  1390.0000 30.50000 34.00000  232     0     0     1     0
## 17  1150.0000 27.10000 31.00000  238     0     0     0     1
## 18   950.0000 28.90000 28.90000  202     0     0     1     0
## 19   910.0000 25.70000 28.20000  227     0     0     0     1
## 20  1010.0000 24.00000 26.90000  227     0     0     0     1
## 21  1070.0000 26.40000 31.20000  222     0     0     0     1
## 22  1190.0000 28.80000 31.60000  237     0     0     0     1
## 23   101.0000 24.90000 30.70000  238     0     0     0     1
## 24  1330.0000 27.00000 30.30000  213     0     0     1     0
## 25   990.0000 26.00000 30.00000  211     0     0     0     1
## 26   100.0000 11.41111 14.24101  130     1     0     0     1
## 27  1100.0000 26.20000 32.50000  190     0     0     0     1
## 28  1190.0000 28.60000 31.60000  245     0     0     1     0
## 29   180.0000 11.70000 15.00000  164     0     1     0     1
## 30  1490.0000 30.10000 32.40000  246     0     0     0     1
## 31  1040.0000 27.10000 31.40000  207     0     0     1     0
## 32   820.0000 24.90000 27.90000  209     0     0     0     1
## 33  1030.0000 26.00000 29.70000  200     0     0     1     0
## 34  1300.0000 25.50000 32.40000  215     0     0     1     0
## 35  1500.0000 26.50000 31.30000  219     0     0     1     0
## 36  1080.0000 25.30000 27.20000  198     0     0     1     0
## 37  1320.0000 27.30000 30.10000  207     0     0     1     0
## 38  1490.0000 25.40000 31.30000  204     0     0     1     0
## 39  1500.0000 29.10000 30.80000  205     0     0     1     0
## 40   100.0000  9.30000 14.24101  144     1     0     0     1
## 41    88.0000  9.70000 11.50000  136     1     0     0     1
## 42   324.0000 16.00000 19.30000  191     0     0     0     1
## 43  1060.0000 26.10000 31.20000  230     0     0     0     1
## 44  1140.0000 25.10000 29.40000  227     0     0     0     1
## 45  1030.0000 27.60000 30.30000  208     0     0     0     1
## 46  1000.0000 25.10000 28.30000  231     0     0     0     1
## 47  1050.0000 28.70000 29.80000  222     0     0     0     1
## 48  1040.0000 26.20000 31.20000  225     0     0     0     1
## 49  1110.0000 26.50000 30.90000  225     0     0     0     1
## 50  1300.0000 27.90000 31.55000  233     0     0     0     1
## 51   980.0000 25.70000 29.30000  214     0     0     0     1
## 52  1120.0000 26.40000 28.30000  233     0     0     0     1
## 53   134.0000 12.40000 13.70000  158     0     1     0     1
## 54  1270.0000 27.80000 31.60000  245     0     0     0     1
## 55   880.0000 25.00000 26.50000  210     0     0     0     1
## 56   340.0000 16.00000 20.80000  230     0     1     0     1
## 57   340.0000 16.10000 19.30000  192     1     0     1     0
## 58  1255.0000 29.70000 31.40000  229     0     0     0     1
## 59  1320.0000 28.60000 36.40000  235     0     0     0     1
## 60  1320.0000 30.00000 33.40000  221     0     0     0     1
## 61  1180.0000 20.20000 26.65000  210     0     0     0     1
## 62   760.0000 24.50000 26.10000  212     0     0     0     1
## 63  1250.0000 26.60000 32.50000  225     0     0     0     1
## 64  1076.4590 25.20000 27.70000  215     0     0     0     1
## 65   100.0000 10.80000 10.50000  122     1     0     0     1
## 66  1300.0000 27.30000 32.70000  235     0     0     0     1
## 67   475.0000 18.20000 24.75000  232     0     1     0     1
## 68   100.0000  9.80000 11.10000  133     1     0     1     0
## 69   150.3824 11.40000 14.20000  154     0     1     1     0
## 70  1080.0000 30.20000 29.10000  209     0     0     1     0
## 71  1130.0000 26.40000 29.40000  212     0     0     1     0
## 72  1160.0000 26.80000 31.00000  209     0     0     1     0
## 73  1345.0000 29.50000 34.30000  250     0     0     0     1
## 74  1385.0000 32.60000 30.60000  235     0     0     1     0
## 75  1210.0000 25.50000 28.60000  222     0     0     1     0
## 76  1455.0000 28.00000 31.50000  236     0     0     0     1
## 77  1180.0000 25.00000 28.90000  210     0     0     0     1
## 78  1500.0000 27.10000 33.20000  239     0     0     0     1
## 79  1025.0000 27.10000 31.50000  228     0     0     0     1
## 80   930.0000 26.10000 31.10000  220     0     0     0     1
## 81  1360.0000 28.60000 33.50000  233     0     0     0     1
## 82  1255.0000 27.70000 32.60000  236     0     0     0     1
## 83   194.0000 12.60000 14.40000  155     0     1     0     1
## 84   159.0000 12.50000 14.80000  152     0     1     0     1
## 85    90.0000  9.50000 11.30000  135     1     0     0     1
## 86   340.0000 17.80000 19.40000  186     1     0     1     0
## 87  1065.0000 25.90000 30.00000  216     0     0     0     1
## 88  1125.0000 19.60000 31.40000  233     0     0     0     1
## 89  1340.0000 28.70000 32.00000  248     0     0     0     1
## 90  1050.0000 26.60000 32.20000  221     0     0     0     1
## 91  1210.0000 27.50000 32.23097  227     0     0     0     1
## 92   980.0000 26.80000 27.80000  223     0     0     0     1
## 93  1000.0000 25.50000 29.80000  219     0     0     0     1
## 94  1390.0000 28.10000 31.30000  225     0     0     1     0
## 95  1275.0000 29.00000 33.70000  238     0     0     0     1
## 96  1180.0000 30.10000 32.23097  235     0     0     0     1
## 97  1210.0000 29.30000 33.80000  222     0     0     0     1
## 98   168.0000 12.70000 14.80000  155     0     1     1     0
## 99   146.0000 11.80000 14.90000  160     0     1     0     1
## 100  108.0000 10.00000 11.50000  137     1     0     0     1
## 101   94.0000  9.50000 11.30000  127     1     0     0     1
## 102 1085.0000 27.70000 29.90000  238     0     0     0     1
## 103  188.0000 12.20000 16.94493  150     0     1     1     0
## 104  154.0000 12.40000 14.40000  150     0     1     0     1
## 105  810.0000 25.90000 28.70000  229     0     0     0     1
## 106  905.0000 27.90000 29.10000  227     0     0     0     1
## 107   94.0000  9.00000 10.20000  129     1     0     0     1
## 108  420.0000 19.60000 23.90000  220     0     1     0     1
## 109 1240.0000 29.10000 34.70000  245     0     0     0     1
## 110  990.0000 26.90000 31.40000  223     0     0     0     1
## 111  365.0000 16.80000 22.50000  224     0     1     0     1
## 112   91.0000 10.20000 11.30000  133     1     0     0     1
## 113 1010.0000 25.80000 31.70000  210     0     0     0     1
## 114  980.0000 26.30000 29.70000  234     0     0     0     1
## 115  860.0000 26.50000 29.00000  219     0     0     0     1
## 116  970.0000 25.80000 29.00000  216     0     0     0     1
## 117  980.0000 27.50000 29.90000  230     0     0     0     1
## 118  985.0000 23.90000 29.00000  223     0     0     0     1
## 119  990.0000 25.60000 30.60000  220     0     0     0     1
## 120 1210.0000 27.80000 32.60000  241     0     0     0     1
## 121   89.0000  8.60000 11.00000  136     1     0     0     1
## 122   97.0000 10.00000 11.30000  137     1     0     1     0
## 123  990.0000 28.00000 29.50000  223     0     0     0     1
## 124 1170.0000 28.10000 31.70000  238     0     0     0     1
## 125   93.0000 10.10000 11.20000  126     1     0     1     0
## 126 1350.0000 30.50000 32.00000  235     0     0     0     1
## 127 1370.0000 29.30000 33.00000  240     0     0     0     1
## 128  103.0000  9.70000 19.40000  137     1     0     0     1
## 129  151.0000 12.20000 13.90000  160     0     1     0     1
## 130  101.0000 10.30000 12.10000  140     1     0     0     1
## 131  985.0000 26.90000 29.80000  220     0     0     0     1
## 132  940.0000 26.50000 30.40000  218     0     0     0     1
## 133 1310.0000 27.40000 34.10000  234     0     0     0     1
## 134 1035.0000 26.10000 30.80000  232     0     0     0     1
## 135  965.0000 26.10000 31.80000  221     0     0     0     1
## 136 1125.0000 25.40000 30.90000  220     0     0     0     1
## 137  975.0000 26.40000 30.30000  232     0     0     0     1
## 138 1140.0000 26.20000 29.80000  214     0     0     0     1
## 139  950.0000 25.30000 29.90000  225     0     0     0     1
## 140 1210.0000 28.10000 28.90000  238     0     0     0     1
## 141   95.0000 10.80000 11.60000  133     1     0     0     1
## 142   89.0000  9.40000 10.80000  136     1     0     0     1
## 143  195.0000 12.40000 14.10000  151     0     1     1     0
## 144   93.0000  9.50000 11.00000  131     1     0     0     1
## 145 1205.0000 28.80000 31.30000  238     0     0     0     1
## 146 1045.0000 27.60000 27.50000  229     0     0     0     1
## 147 1090.0000 26.60000 28.80000  202     0     0     0     1
## 148 1190.0000 30.30000 32.80000  226     0     0     0     1
## 149  960.0000 25.60000 30.10000  220     0     0     0     1
## 150  955.0000 26.30000 30.10000  215     0     0     0     1
## 151 1110.0000 24.70000 30.20000  122     0     0     0     1
## 152  100.0000 19.10000 11.50000  134     1     0     0     1
## 153  900.0000 24.00000 26.50000  215     0     0     0     1
## 154 1075.0000 26.50000 30.70000  208     0     0     0     1
## 155  980.0000 27.90000 32.10000  211     0     0     0     1
## 156  940.0000 27.80000 34.20000  220     0     0     0     1
## 157 1070.0000 25.60000 30.40000  204     0     0     0     1
## 158 1120.0000 29.40000 31.60000  229     0     0     0     1
## 159 1060.0000 27.60000 29.00000  205     0     0     1     0
## 160  168.0000 12.10000 14.30000  155     0     1     0     1
## 161  211.0000 11.50000 13.90000  150     0     1     0     1
## 162 1125.0000 27.20000 27.40000  244     0     0     0     1
## 163 1100.0000 27.00000 28.20000  225     0     0     0     1
## 164 1360.0000 30.00000 33.90000  239     0     0     0     1
## 165  995.0000 26.70000 30.70000  222     0     0     0     1
## 166 1095.0000 21.10000 31.40000  209     0     0     1     0
## 167  196.0000 12.10000 14.60000  164     0     1     0     1
## 168  176.0000 11.70000 15.10000  159     0     1     0     1
## 169 1075.0000 25.50000 29.70000  211     0     0     1     0
## 170  180.0000 12.30000 15.20000  160     0     1     1     0
## 171  164.0000 12.30000 14.30000  157     0     1     0     1
## 172  158.0000 12.20000 14.40000  160     0     1     0     1
## 173 1140.0000 26.80000 29.20000  216     0     0     0     1
## 174 1240.0000 27.90000 31.80000  250     0     0     0     1
## 175 1465.0000 29.70000 34.60000  260     0     0     0     1
## 176  169.0000 12.10000 14.50000  164     0     1     0     1
## 177 1105.0000 26.70000 28.90000  217     0     0     0     1
## 178 1010.0000 27.10000 31.40000  228     0     0     0     1
## 179 1075.0000 26.30000 30.50000  218     0     0     0     1
## 180 1060.0000 27.90000 30.90000  220     0     0     0     1
## 181 1015.0000 27.60000 31.10000  227     0     0     0     1
## 182 1100.0000 26.00000 30.20000  211     0     0     0     1
## 183 1010.0000 25.00000 30.60000  222     0     0     0     1
## 184 1000.0000 26.30000 30.10000  225     0     0     0     1
## 185  980.0000 25.40000 30.20000  221     0     0     0     1
## 186 1240.0000 28.70000 32.40000  231     0     0     0     1
## 187 1360.0000 27.90000 33.10000  235     0     0     0     1
## 188  183.0000 17.30000 19.20000  182     1     0     1     0
## 189 1405.0000 29.10000 32.23097  235     0     0     0     1
## 190 1055.0000 27.00000 29.10000  200     0     0     1     0
## 191 1670.0000 27.10000 32.90000  216     0     0     1     0
## 192 1250.0000 26.20000 30.50000  223     0     0     0     1
## 193 1030.0000 25.30000 29.90000  210     0     0     0     1
## 194 1040.0000 26.81197 29.90000  229     0     0     0     1
## 195  190.0000 12.20000 15.50000  160     0     1     0     1
## 196  105.0000 10.00000 10.80000  125     1     0     0     1
## 197 1090.0000 26.20000 28.80000  226     0     0     0     1
## 198  190.0000 11.80000 13.90000  154     0     1     0     1
## 199 1050.0000 28.40000 29.40000  207     0     0     1     0
## 200 1110.0000 26.10000 30.00000  238     0     0     0     1
## 201  206.0000 12.10000 13.50000  151     0     1     0     1
## 202  195.0000 12.10000 14.80000  158     0     1     0     1
## 203 1010.0000 24.90000 30.10000  197     0     0     1     0
## 204  880.0000 24.20000 28.70000  250     0     0     0     1
## 205 1060.0000 24.30000 29.80000  215     0     0     0     1
## 206  920.0000 25.70000 30.00000  214     0     0     0     1
## 207 1195.0000 26.20000 29.80000  230     0     0     0     1
## 208  890.0000 26.00000 28.40000  213     0     0     0     1
## 209  900.0000 25.30000 29.00000  214     0     0     0     1
## 210 1110.0000 22.20000 31.50000  224     0     0     1     0
## 211  160.0000 10.20000 13.20000  153     0     1     0     1
## 212  105.0000 10.10000 11.30000  131     1     0     0     1
## 213   99.0000  9.60000 12.70000  145     1     0     0     1
## 214  165.0000 12.00000 14.40000  165     0     1     0     1
## 215  100.0000 12.00000 12.50000  168     0     1     0     1
## 216  125.0000 11.50000 14.40000  156     0     1     0     1
## 217 1100.0000 29.00000 32.60000  215     0     0     0     1
## 218  147.0957 11.41111 14.24101  164     0     1     0     1
## 219  155.0000 11.90000 14.60000  155     0     1     0     1
## 220 1285.0000 29.50000 31.80000  239     0     0     0     1
## 221  390.0000 15.10000 20.40000  185     1     0     1     0
## 222  920.0000 26.80000 30.20000  214     0     0     0     1
## 223 1025.0000 25.40000 30.80000  232     0     0     0     1
## 224  940.0000 26.00000 29.10000  205     0     0     1     0
## 225 1240.0000 28.50000 30.80000  243     0     0     0     1
## 226 1160.0000 27.80000 33.00000  255     0     0     0     1
## 227  150.0000 11.50000 13.90000  159     0     1     0     1
## 228  130.0000 11.70000 14.40000  156     0     1     0     1
## 229 1240.0000 26.80000 32.70000  276     0     0     0     1
## 230  930.0000 24.40000 27.40000  210     0     0     0     1
## 231   90.0000 10.90000 12.10000  145     1     0     0     1
## 232 1240.0000 25.60000 31.20000  231     0     0     0     1
## 233 1030.0000 25.20000 29.80000  216     0     0     0     1
## 234  550.0000 18.80000 21.30000  210     1     0     0     1
## 235 1250.0000 26.50000 32.00000  210     0     0     0     1
## 236  999.0000 25.30000 29.80000  220     0     0     0     1
## 237 1120.0000 26.50000 30.80000  260     0     0     1     0
## 238 1000.0000 26.40000 30.10000  200     0     0     1     0
## 239  530.0000 19.20000 24.70000  213     0     1     0     1
## 240 1040.0000 27.70000 32.10000  230     0     0     0     1
## 241 1150.0000 27.80000 31.10000  220     0     0     0     1
## 242 1000.0000 25.90000 30.20000  220     0     0     0     1
## 243 1360.0000 33.30000 28.60000  235     0     0     0     1
## 244  930.0000 25.70000 28.90000  215     0     0     0     1
## 245  980.0000 25.80000 30.40000  215     0     0     0     1
## 246 1260.0000 27.70000 31.80000  221     0     0     0     1
## 247  900.0000 27.50000 28.60000  225     0     0     0     1
## 248 1300.0000 25.90000 31.90000  238     0     0     0     1
## 249  470.0000 16.60000 23.40000  221     0     1     0     1
## 250 1040.0000 26.40000 30.90000  212     0     0     1     0
## 251  950.0000 27.30000 30.50000  215     0     0     0     1
## 252 1320.0000 29.40000 33.90000  235     0     0     0     1
## 253  180.0000 14.10000 12.70000  132     0     1     0     1
## 254 1280.0000 27.90000 32.70000  229     0     0     0     1
## 255 1310.0000 26.10000 31.10000  251     0     0     0     1
## 256  910.0000 26.40000 28.40000  215     0     0     1     0
## 257 1220.0000 28.60000 30.40000  225     0     0     0     1
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## 575   95.0000 10.40000 11.40000  127     1     0     1     0
## 576  915.0000 25.00000 28.30000  209     0     0     0     1
## 577  535.0000 18.80000 25.40000  223     0     1     1     0
## 578 1310.0000 29.10000 33.30000  237     0     0     0     1
## 579  950.0000 26.90000 30.10000  210     0     0     0     1
## 580  120.0000 10.10000 11.70000  133     1     0     1     0
## 581  975.0000 26.10000 27.90000  215     0     0     0     1
## 582  990.0000 27.90000 31.00000  217     0     0     0     1
## 583  110.0000 11.40000 16.94493  135     1     0     1     0
## 584 1270.0000 26.50000 29.60000  207     0     0     1     0
## 585  960.0000 26.00000 31.00000  211     0     0     0     1
## 586 1290.0000 28.80000 30.70000  225     0     0     0     1
## 587   95.0000 10.20000 11.60000  131     1     0     0     1
## 588  505.0000 19.20000 25.10000  203     0     1     1     0
## 589 1045.0000 26.90000 31.50000  223     0     0     0     1
## 590 1090.0000 27.10000 30.30000  218     0     0     0     1
## 591 1180.0000 28.60000 30.00000  222     0     0     0     1
## 592 1195.0000 27.60000 34.70000  235     0     0     0     1
## 593 1055.0000 27.70000 32.70000  208     0     0     1     0
## 594 1025.0000 26.10000 30.30000  216     0     0     0     1
## 595  175.0000 12.00000 14.80000  157     0     1     0     1
## 596  940.0000 25.10000 31.70000  217     0     0     0     1
## 597 1335.0000 28.30000 33.30000  219     0     0     1     0
## 598 1085.0000 29.40000 32.70000  235     0     0     0     1
## 599  375.0000 16.20000 20.70000  185     1     0     0     1
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## 601  995.0000 26.00000 28.20000  211     0     0     0     1
## 602 1090.0000 28.00000 30.70000  201     0     0     1     0
## 603 1020.0000 28.00000 31.20000  200     0     0     1     0
## 604  100.0000 10.60000 12.10000  137     1     0     0     1
## 605 1000.0000 28.60000 32.20000  217     0     0     1     0
## 606 1085.0000 27.40000 33.30000  223     0     0     0     1
## 607 1045.0000 24.90000 27.00000  199     0     0     1     0
## 608 1060.0000 27.70000 32.40000  217     0     0     0     1
## 609 1135.0000 27.10000 32.10000  207     0     0     1     0
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## 611  185.0000 13.00000 14.30000  163     0     1     0     1
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## 614 1125.0000 25.30000 29.50000  220     0     0     0     1
## 615  950.0000 27.20000 29.80000  216     0     0     0     1
## 616 1195.0000 27.30000 30.90000  216     0     0     1     0
## 617 1005.0000 25.00000 31.60000  222     0     0     0     1
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## 620  995.0000 26.20000 30.00000  213     0     0     0     1
## 621  165.0000 12.10000 14.20000  154     0     1     0     1
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## 623  145.0000 12.00000 14.60000  156     0     1     0     1
## 624  175.0000 12.40000 15.20000  160     0     1     0     1
## 625  170.0000 13.10000 14.80000  149     0     1     0     1
## 626  105.0000 10.30000 11.20000  131     1     0     0     1
## 627   95.0000 10.00000 11.40000  137     1     0     0     1
## 628   95.0000  9.80000 10.80000  126     1     0     0     1
## 629 1085.0000 31.20000 34.60000  210     0     0     0     1
## 630  165.0000 12.30000 14.80000  165     0     1     0     1
## 631 1115.0000 27.40000 32.70000  235     0     0     0     1
## 632 1195.0000 27.60000 33.00000  222     0     0     0     1
## 633  100.0000  9.80000 11.90000  129     1     0     0     1
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## 635  170.0000 11.90000  9.50000  156     0     1     0     1
## 636   90.0000  9.80000 11.30000  135     1     0     0     1
## 637   95.0000 10.70000 11.10000  129     1     0     0     1
## 638  115.0000  9.80000 11.40000  131     1     0     0     1
## 639  155.0000 11.90000 14.50000  160     0     1     0     1
## 640  229.0000 17.00000 21.00000  195     0     1     0     1
## 641 1165.0000 29.00000 33.10000  223     0     0     1     0
## 642  155.0000 17.10000 21.00000  192     1     0     0     1
## 643  340.0000 16.10000 20.20000  198     1     0     1     0
## 644  180.0000 12.00000 15.50000  152     0     1     1     0
## 645  235.0000 25.40000 30.70000  223     0     0     0     1
## 646  105.0000 10.20000 11.20000  132     1     0     0     1
## 647 1085.0000 27.50000 30.80000  216     0     0     1     0
## 648  970.0000 26.10000 30.40000  207     0     0     0     1
## 649 1030.0000 28.50000 31.90000  218     0     0     0     1
## 650 1015.0000 25.50000 29.60000  215     0     0     0     1
## 651 1030.0000 29.20000 31.50000  224     0     0     1     0
## 652 1215.0000 26.40000 29.20000  242     0     0     0     1
## 653  185.0000 13.50000 14.20000  157     0     1     1     0
## 654   95.0000 10.20000 11.00000  119     1     0     1     0
## 655   95.0000 10.00000 11.00000  130     1     0     0     1
## 656   95.0000  9.70000 11.00000  124     1     0     1     0
## 657  110.0000 10.10000 11.80000  130     1     0     0     1
## 658 1170.0000 28.40000 32.80000  237     0     0     0     1
## 659  105.0000 10.40000 11.20000  140     1     0     0     1
## 660  175.0000 12.80000 14.50000  159     0     1     1     0
## 661   95.0000 10.90000 11.70000  138     1     0     0     1
## 662  190.0000 13.70000 15.20000  159     0     1     1     0
## 663  105.0000 10.20000 11.80000  136     1     0     1     0
## 664 1435.0000 27.40000 32.70000  221     0     0     0     1
## 665 1235.0000 30.10000 35.80000  243     0     0     0     1
## 666 1055.0000 29.50000 32.20000  222     0     0     0     1
## 667 1105.0000 22.00000 30.80000  208     0     0     0     1
## 668  120.0000  9.80000 11.80000  132     1     0     1     0
## 669 1390.0000 28.40000 32.70000  245     0     0     0     1
## 670  105.0000 10.30000 10.80000  131     1     0     1     0
## 671 1080.0000 26.50000 31.30000  206     0     0     1     0
## 672  910.0000 26.10000 32.20000  220     0     0     0     1
## 673  490.0000 18.00000 24.20000  214     0     1     0     1
## 674  845.0000 25.00000 27.40000  217     0     0     0     1
## 675  175.0000 13.30000 14.90000  162     0     1     1     0
## 676  865.0000 25.60000 27.30000  210     0     0     0     1
## 677  180.0000 11.90000 13.50000  163     0     1     1     0
## 678 2030.0000 26.20000 30.20000  196     0     0     0     1
## 679  960.0000 24.60000 30.00000  206     0     0     1     0
## 680  515.0000 19.50000 23.80000  218     0     1     1     0
## 681  970.0000 26.30000 30.70000  218     0     0     0     1
## 682 1265.0000 26.60000 30.60000  210     0     0     1     0
## 683 1300.0000 29.40000 32.80000  224     0     0     1     0
## 684  170.0000 12.90000 14.70000  154     0     1     0     1
## 685  191.0000 13.50000 15.50000  161     0     1     0     1
## 686  540.0000 19.10000 22.60000  209     0     1     1     0
## 687  185.0000 12.00000 14.90000  157     0     1     0     1
## 688  165.0000 11.90000 14.40000  158     0     1     0     1
## 689  205.0000 12.20000 14.00000  156     0     1     1     0
## 690   95.0000 10.40000 12.10000  133     1     0     0     1
## 691 1170.0000 25.80000 30.50000  218     0     0     1     0
## 692 1075.0000 27.70000 31.70000  213     0     0     0     1
## 693  200.0000 12.10000 15.30000  165     0     1     0     1
## 694  965.0000 25.80000 29.10000  235     0     0     0     1
## 695  785.0000 22.70000 25.00000  206     0     0     0     1
## 696 1095.0000 25.60000 31.70000  206     0     0     1     0
## 697  160.0000 12.00000 14.70000  153     0     1     0     1
## 698   95.0000  9.10000 11.50000  135     1     0     0     1
## 699 1500.0000 29.70000 32.10000  207     0     0     1     0
## 700 1595.0000 27.40000 34.50000  230     0     0     1     0
## 701  985.0000 25.40000 31.00000  224     0     0     0     1
## 702  565.0000 20.00000 24.20000  216     0     1     1     0
## 703  240.0000 25.20000 29.30000  218     0     0     0     1
## 704  875.0000 26.00000 31.10000  215     0     0     0     1
## 705 1225.0000 29.00000 33.40000  226     0     0     0     1
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## 707  950.0000 26.80000 30.70000  212     0     0     0     1
## 708  330.0000 16.00000 18.50000  193     1     0     0     1
## 709  895.0000 27.50000 30.10000  201     0     0     1     0
## 710  100.0000  9.80000 12.00000  129     1     0     0     1
## 711  455.0000 17.10000 26.80000  216     0     1     0     1
## 712   90.0000 10.30000 11.50000  132     1     0     0     1
## 713  105.0000 11.30000 11.40000  131     1     0     0     1
## 714 1305.0000 28.20000 34.30000  234     0     0     0     1
## 715  975.0000 27.20000 31.80000  220     0     0     0     1
## 716 1185.0000 28.90000 34.30000  225     0     0     0     1
## 717 1030.0000 26.10000 30.50000  214     0     0     0     1
## 718 1215.0000 28.70000 34.10000  230     0     0     0     1
## 719 1075.0000 26.90000 32.80000  220     0     0     0     1
## 720  960.0000 19.70000 42.80000  200     0     1     1     0
## 721  795.0000 24.30000 27.60000  209     0     0     0     1
## 722  180.0000 12.20000 14.20000  156     0     1     0     1
## 723 1225.0000 27.80000 32.00000  225     0     0     0     1
## 724  110.0000 10.00000 11.90000  139     1     0     0     1
## 725  165.0000 12.20000 14.90000  159     0     1     1     0
## 726  920.0000 26.30000 32.00000  226     0     0     0     1
## 727  170.0000 12.00000 15.00000  154     0     1     0     1
## 728 1315.0000 29.60000 34.00000  230     0     0     0     1
## 729  100.0000  9.40000 11.10000  131     1     0     0     1
## 730  155.0000 12.50000 14.50000  156     0     1     0     1
## 731 1155.0000 29.90000 34.40000  233     0     0     0     1
## 732 1160.0000 29.00000 32.30000  235     0     0     0     1
## 733  955.0000 27.90000 30.40000  226     0     0     0     1
## 734  190.0000 13.10000 14.90000  145     0     1     1     0
## 735  180.0000 13.80000 14.70000  156     0     1     1     0
## 736   90.0000 10.00000 11.50000  130     1     0     1     0
## 737  100.0000  9.80000 11.70000  130     1     0     0     1
## 738  190.0000 12.40000 14.80000  147     1     0     1     0
## 739  105.0000 10.30000 12.00000  141     1     0     0     1
## 740 1030.0000 27.00000 30.50000  231     0     0     0     1
## 741  565.0000 19.70000 54.50000  205     0     1     1     0
## 742  380.0000 12.40000 21.90000  192     1     0     1     0
## 743 1040.0000 28.10000 30.90000  225     0     0     0     1
## 744  910.0000 24.30000 27.50000  205     0     0     0     1
## 745 1005.0000 26.00000 32.50000  226     0     0     0     1
## 746  180.0000 11.90000 14.30000  156     0     1     0     1
## 747  175.0000 12.40000 15.60000  153     0     1     0     1
## 748  105.0000  9.80000 11.00000  131     1     0     0     1
## 749  190.0000 11.80000 14.20000  155     0     1     0     1
## 750 1250.0000 28.20000 35.30000  230     0     0     0     1
## 751  185.0000 12.60000 15.20000  165     0     1     0     1
## 752 1275.0000 27.50000 33.70000  238     0     0     0     1
## 753  105.0000  9.80000 12.50000  132     1     0     0     1
## 754  640.0000 16.70000 23.60000  233     0     1     1     0
## 755  100.0000 10.50000 10.70000  135     1     0     0     1
## 756  105.0000 10.70000 11.60000  134     1     0     1     0
## 757  390.0000 15.90000 20.60000  181     1     0     1     0
## 758 1030.0000 26.90000 31.30000  217     0     0     0     1
## 759 1290.0000 29.30000 33.30000  227     0     0     1     0
## 760 1020.0000 26.90000 31.60000  230     0     0     0     1
## 761  105.0000  9.90000 11.40000  136     1     0     1     0
## 762 1055.0000 26.50000 29.90000  217     0     0     0     1
## 763  185.0000 12.30000 14.80000  154     0     1     1     0
## 764 1010.0000 25.00000 29.30000  216     0     0     0     1
## 765 1015.0000 24.90000 29.50000  215     0     0     0     1
## 766 1115.0000 29.50000 30.30000  199     0     0     1     0
## 767 1320.0000 26.70000 31.60000  210     0     0     0     1
## 768 1180.0000 30.30000 33.40000  217     0     0     1     0
## 769 1145.0000 25.90000 32.20000  212     0     0     0     1
## 770  995.0000 28.00000 30.20000  223     0     0     0     1
## 771 1045.0000 26.10000 30.50000  215     0     0     0     1
## 772  340.0000 16.00000 19.50000  196     1     0     0     1
## 773  935.0000 25.70000 27.10000  218     0     0     0     1
## 774 1065.0000 26.10000 31.00000  221     0     0     0     1
## 775 1110.0000 27.70000 31.30000  215     0     0     0     1
## 776  190.0000 12.00000 15.20000  163     0     1     0     1
## 777 1255.0000 27.90000 31.80000  218     0     0     1     0
## 778 1015.0000 24.90000 28.40000  204     0     0     1     0
## 779  190.0000 12.20000 15.20000  151     0     1     0     1
## 780  960.0000 26.60000 29.90000  218     0     0     0     1
## 781  200.0000 11.30000 13.50000  155     0     1     0     1
## 782 1090.0000 27.30000 30.40000  216     0     0     1     0
## 783  170.0000 12.00000 14.70000  156     1     0     0     1
## 784 1085.0000 25.40000 29.80000  220     0     0     0     1
## 785 1065.0000 27.70000 30.00000  230     0     0     0     1
## 786 1125.0000 26.90000 29.30000  213     0     0     0     1
## 787 1050.0000 25.50000 30.30000  220     0     0     0     1
## 788  525.0000 19.50000 23.50000  213     0     1     0     1
## 789  980.0000 26.40000 29.00000  215     0     0     0     1
## 790 1180.0000 24.40000 30.70000  214     0     0     0     1
## 791  115.0000  9.90000 11.60000  136     1     0     0     1
## 792 1095.0000 26.60000 28.40000  215     0     0     0     1
## 793 1330.0000 26.80000 30.10000  217     0     0     1     0
## 794  185.0000 12.10000 14.90000  158     0     1     0     1
## 795 1100.0000 22.10000 28.80000  219     0     0     1     0
## 796 1115.0000 27.10000 21.00000  215     0     0     0     1
## 797 1400.0000 30.30000 33.30000  211     0     0     1     0
## 798 1175.0000 27.60000 32.60000  234     0     0     0     1
## 799  185.0000 11.80000 15.10000  161     0     1     0     1
## 800  970.0000 25.90000 31.60000  208     0     0     1     0
## 801  170.0000 11.60000 14.00000  153     0     1     0     1
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## 803  165.0000 11.50000 14.50000  163     0     1     0     1
## 804 1260.0000 28.60000 32.50000  226     0     0     0     1
## 805  110.0000  9.90000 11.10000  125     1     0     0     1
## 806  100.0000  9.30000 11.50000  134     1     0     0     1
## 807  190.0000 12.30000 14.80000  162     0     1     0     1
## 808  305.0000 16.00000 20.40000  185     1     0     0     1
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## 810   90.0000  9.50000 11.30000  123     1     0     0     1
## 811 1195.0000 27.00000 23.80000  228     0     0     1     0
## 812 1035.0000 27.90000 33.10000  221     0     0     0     1
## 813   90.0000  8.80000 11.40000  131     1     0     0     1
## 814  160.0000 12.70000 14.60000  143     1     0     0     1
## 815   85.0000  9.70000 11.00000  129     1     0     0     1
## 816 1155.0000 28.30000 30.90000  223     0     0     0     1
## 817 1260.0000 27.80000 32.90000  232     0     0     0     1
## 818   95.0000  8.90000 10.40000  125     1     0     0     1
## 819  440.0000 18.60000 22.80000  214     0     1     0     1
## 820  175.0000 10.00000 14.90000  150     1     0     0     1
## 821  295.0000 16.10000 19.40000  183     1     0     0     1
## 822  160.0000 12.60000 14.50000  158     0     1     0     1
## 823 1010.0000 26.80000 31.10000  230     0     0     0     1
## 824  990.0000 26.00000 29.60000  225     0     0     0     1
## 825  150.0000 11.40000 14.30000  141     1     0     0     1
## 826  300.0000 16.00000 20.10000  183     1     0     0     1
## 827  945.0000 24.50000 31.30000  224     0     0     0     1
## 828  188.0000 11.70000 14.90000  162     0     1     0     1
## 829   95.0000 10.60000 11.50000  131     1     0     0     1
## 830  330.0000 15.70000 19.40000  188     1     0     1     0
## 831   95.0000  9.90000 11.20000  132     1     0     0     1
## 832  970.0000 26.40000 30.50000  215     0     0     0     1
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## 834  105.0000 10.00000 11.50000  133     1     0     0     1
## 835  165.0000 11.50000 14.90000  156     0     1     0     1
## 836  170.0000 12.10000 15.10000  163     0     1     0     1
## 837  100.0000 10.20000 11.90000  134     1     0     0     1
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## 840  175.0000 11.70000 14.20000  160     0     1     1     0
## 841  195.0000 13.60000 14.00000  158     0     1     1     0
## 842  335.0000 16.30000 21.30000  187     1     0     1     0
## 843 1150.0000 26.10000 28.20000  196     0     0     1     0
## 844  960.0000 25.40000 30.40000  217     0     0     0     1
## 845 1130.0000 28.30000 29.40000  227     0     0     0     1
## 846  925.0000 25.40000 28.60000  220     0     0     0     1
## 847 1205.0000 27.60000 33.40000  227     0     0     0     1
## 848 1040.0000 27.20000 31.50000  238     0     0     0     1
## 849  100.0000  9.90000 11.20000  122     1     0     0     1
## 850  335.0000 16.30000 19.70000  201     1     0     0     1
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## 852  105.0000 10.30000 11.70000  137     1     0     0     1
## 853  860.0000 25.60000 30.00000  220     0     0     0     1
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## 855 1010.0000 24.30000 29.00000  197     0     0     1     0
## 856 1285.0000 29.70000 33.50000  230     0     0     0     1
## 857  210.0000 13.00000 14.50000  147     0     1     1     0
## 858  830.0000 23.60000 27.80000  233     0     0     0     1
## 859   95.0000 10.20000 11.20000  135     1     0     0     1
## 860 1350.0000 28.00000 32.80000  140     0     0     0     1
## 861 1010.0000 25.00000 30.80000  218     0     0     0     1
## 862  960.0000 27.70000 32.50000  222     0     0     0     1
## 863 1370.0000 26.40000 29.20000  233     0     0     0     1
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## 865  100.0000  8.70000 11.40000  136     1     0     0     1
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## 869 1285.0000 29.40000 34.00000  242     0     0     0     1
## 870   95.0000  9.80000 11.70000  129     1     0     1     0
## 871 1005.0000 27.00000 31.60000  205     0     0     1     0
## 872 1220.0000 28.10000 32.70000  236     0     0     1     0
## 873   95.0000  9.60000 12.40000  121     1     0     1     0
## 874  100.0000  9.80000 12.00000  134     1     0     0     1
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## 876 1020.0000 24.60000 30.00000  211     0     0     0     1
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## 878  895.0000 24.50000 28.90000  217     0     0     0     1
## 879 1160.0000 25.70000 28.40000  218     0     0     0     1
## 880 1585.0000 29.00000 33.80000  241     0     0     0     1
## 881 1140.0000 24.90000 31.60000  218     0     0     1     0
## 882 1115.0000 25.30000 29.20000  208     0     0     1     0
## 883 1145.0000 25.40000 30.20000  212     0     0     1     0
## 884  185.0000 12.80000 14.80000  152     0     1     1     0
## 885  990.0000 25.30000 29.80000  203     0     0     1     0
## 886  945.0000 24.50000 32.23097  218     0     0     0     1
## 887  165.0000 11.70000 14.50000  153     0     1     0     1
## 888 1030.0000 26.30000 28.10000  196     0     0     1     0
## 889  320.0000 15.50000 19.50000  184     1     0     0     1
## 890  105.0000 13.00000 15.60000  156     0     1     0     1
## 891  990.0000 26.40000 30.00000  217     0     0     0     1
## 892 1065.0000 28.00000 32.70000  212     0     0     1     0
## 893 1050.0000 26.10000 29.70000  237     0     0     0     1
## 894  840.0000 23.20000 26.10000  206     0     0     0     1
## 895  190.0000 12.20000 15.80000  158     0     1     0     1
## 896  200.0000 12.70000 15.00000  157     0     1     0     1
## 897  185.0000 12.80000 15.60000  157     0     1     0     1
## 898 1000.0000 26.90000 31.40000  201     0     0     1     0
## 899  185.0000 12.80000 15.20000  158     0     1     0     1
## 900 1325.0000 26.20000 30.60000  224     0     0     1     0
## 901  945.0000 25.30000 27.20000  199     0     0     1     0
## 902 1350.0000 28.70000 31.00000  219     0     0     1     0
## 903  805.0000 23.50000 25.70000  217     0     0     0     1
## 904 1525.0000 26.00000 27.60000  224     0     0     0     1
## 905  175.0000 12.70000 15.40000  150     0     1     0     1
## 906  790.0000 21.90000 27.60000  211     0     0     0     1
## 907  860.0000 25.20000 28.00000  207     0     0     0     1
## 908 1290.0000 28.70000 32.10000  222     0     0     1     0

Now, we create a subset of the dataset containing only numerical variables, including categorical variables converted into numerical format using dummy encoding.

hawks_selected <- hawks_limpio2 %>%
  select(Wing, Weight, Culmen, Hallux, Sex_M, Sex_F, Age_A, Age_I)

print(hawks_selected)
##         Wing    Weight   Culmen   Hallux Sex_M Sex_F Age_A Age_I
## 1   385.0000  920.0000 25.70000 30.10000     0     0     0     1
## 2   376.0000  930.0000 26.81197 32.23097     0     0     0     1
## 3   381.0000  990.0000 26.70000 31.30000     0     0     0     1
## 4   265.0000  470.0000 18.70000 23.50000     0     1     0     1
## 5   205.0000  170.0000 12.50000 14.30000     0     1     0     1
## 6   412.0000 1090.0000 28.50000 32.20000     0     0     0     1
## 7   370.0000  960.0000 25.30000 30.10000     0     0     0     1
## 8   375.0000  855.0000 27.20000 30.00000     0     0     1     0
## 9   412.0000 1210.0000 29.30000 31.30000     0     0     1     0
## 10  405.0000 1120.0000 26.00000 30.20000     0     0     0     1
## 11  393.0000 1010.0000 26.30000 30.80000     0     0     0     1
## 12  371.0000 1010.0000 25.40000 29.70000     0     0     0     1
## 13  390.0000 1120.0000 28.90000 30.90000     0     0     1     0
## 14  393.0000 1161.4132 28.20000 30.60000     0     0     1     0
## 15  416.0000 1170.0000 26.50000 34.00000     0     0     0     1
## 16  436.0000 1390.0000 30.50000 34.00000     0     0     1     0
## 17  418.0000 1150.0000 27.10000 31.00000     0     0     0     1
## 18  381.0000  950.0000 28.90000 28.90000     0     0     1     0
## 19  378.0000  910.0000 25.70000 28.20000     0     0     0     1
## 20  396.0000 1010.0000 24.00000 26.90000     0     0     0     1
## 21  399.0000 1070.0000 26.40000 31.20000     0     0     0     1
## 22  416.0000 1190.0000 28.80000 31.60000     0     0     0     1
## 23  415.0000  101.0000 24.90000 30.70000     0     0     0     1
## 24  392.0000 1330.0000 27.00000 30.30000     0     0     1     0
## 25  380.0000  990.0000 26.00000 30.00000     0     0     0     1
## 26  173.0000  100.0000 11.41111 14.24101     1     0     0     1
## 27  399.0000 1100.0000 26.20000 32.50000     0     0     0     1
## 28  401.0000 1190.0000 28.60000 31.60000     0     0     1     0
## 29  205.0000  180.0000 11.70000 15.00000     0     1     0     1
## 30  427.0000 1490.0000 30.10000 32.40000     0     0     0     1
## 31  395.0000 1040.0000 27.10000 31.40000     0     0     1     0
## 32  362.0000  820.0000 24.90000 27.90000     0     0     0     1
## 33  396.0000 1030.0000 26.00000 29.70000     0     0     1     0
## 34  391.0000 1300.0000 25.50000 32.40000     0     0     1     0
## 35  413.0000 1500.0000 26.50000 31.30000     0     0     1     0
## 36  371.0000 1080.0000 25.30000 27.20000     0     0     1     0
## 37  385.0000 1320.0000 27.30000 30.10000     0     0     1     0
## 38  378.0000 1490.0000 25.40000 31.30000     0     0     1     0
## 39  416.0000 1500.0000 29.10000 30.80000     0     0     1     0
## 40  193.0000  100.0000  9.30000 14.24101     1     0     0     1
## 41  171.0000   88.0000  9.70000 11.50000     1     0     0     1
## 42  233.0000  324.0000 16.00000 19.30000     0     0     0     1
## 43  384.0000 1060.0000 26.10000 31.20000     0     0     0     1
## 44  382.0000 1140.0000 25.10000 29.40000     0     0     0     1
## 45  390.0000 1030.0000 27.60000 30.30000     0     0     0     1
## 46  390.0000 1000.0000 25.10000 28.30000     0     0     0     1
## 47  393.0000 1050.0000 28.70000 29.80000     0     0     0     1
## 48  378.0000 1040.0000 26.20000 31.20000     0     0     0     1
## 49  398.0000 1110.0000 26.50000 30.90000     0     0     0     1
## 50  412.0000 1300.0000 27.90000 31.55000     0     0     0     1
## 51  400.0000  980.0000 25.70000 29.30000     0     0     0     1
## 52  422.0000 1120.0000 26.40000 28.30000     0     0     0     1
## 53  202.0000  134.0000 12.40000 13.70000     0     1     0     1
## 54  394.0000 1270.0000 27.80000 31.60000     0     0     0     1
## 55  369.0000  880.0000 25.00000 26.50000     0     0     0     1
## 56  252.0000  340.0000 16.00000 20.80000     0     1     0     1
## 57  240.0000  340.0000 16.10000 19.30000     1     0     1     0
## 58  410.0000 1255.0000 29.70000 31.40000     0     0     0     1
## 59  241.0000 1320.0000 28.60000 36.40000     0     0     0     1
## 60  408.0000 1320.0000 30.00000 33.40000     0     0     0     1
## 61   37.2000 1180.0000 20.20000 26.65000     0     0     0     1
## 62  380.0000  760.0000 24.50000 26.10000     0     0     0     1
## 63  396.0000 1250.0000 26.60000 32.50000     0     0     0     1
## 64  326.0000 1076.4590 25.20000 27.70000     0     0     0     1
## 65  158.0000  100.0000 10.80000 10.50000     1     0     0     1
## 66  416.0000 1300.0000 27.30000 32.70000     0     0     0     1
## 67  271.0000  475.0000 18.20000 24.75000     0     1     0     1
## 68  176.0000  100.0000  9.80000 11.10000     1     0     1     0
## 69  194.0000  150.3824 11.40000 14.20000     0     1     1     0
## 70  390.0000 1080.0000 30.20000 29.10000     0     0     1     0
## 71  391.0000 1130.0000 26.40000 29.40000     0     0     1     0
## 72  387.0000 1160.0000 26.80000 31.00000     0     0     1     0
## 73  420.0000 1345.0000 29.50000 34.30000     0     0     0     1
## 74  435.0000 1385.0000 32.60000 30.60000     0     0     1     0
## 75  400.0000 1210.0000 25.50000 28.60000     0     0     1     0
## 76  398.0000 1455.0000 28.00000 31.50000     0     0     0     1
## 77  395.0000 1180.0000 25.00000 28.90000     0     0     0     1
## 78  410.0000 1500.0000 27.10000 33.20000     0     0     0     1
## 79  369.0000 1025.0000 27.10000 31.50000     0     0     0     1
## 80  372.0000  930.0000 26.10000 31.10000     0     0     0     1
## 81  415.0000 1360.0000 28.60000 33.50000     0     0     0     1
## 82  412.0000 1255.0000 27.70000 32.60000     0     0     0     1
## 83  205.0000  194.0000 12.60000 14.40000     0     1     0     1
## 84  204.0000  159.0000 12.50000 14.80000     0     1     0     1
## 85  170.0000   90.0000  9.50000 11.30000     1     0     0     1
## 86  233.0000  340.0000 17.80000 19.40000     1     0     1     0
## 87  375.0000 1065.0000 25.90000 30.00000     0     0     0     1
## 88  385.0000 1125.0000 19.60000 31.40000     0     0     0     1
## 89  422.0000 1340.0000 28.70000 32.00000     0     0     0     1
## 90  391.0000 1050.0000 26.60000 32.20000     0     0     0     1
## 91  410.0000 1210.0000 27.50000 32.23097     0     0     0     1
## 92  385.0000  980.0000 26.80000 27.80000     0     0     0     1
## 93  381.0000 1000.0000 25.50000 29.80000     0     0     0     1
## 94  416.0000 1390.0000 28.10000 31.30000     0     0     1     0
## 95  406.0000 1275.0000 29.00000 33.70000     0     0     0     1
## 96  418.0000 1180.0000 30.10000 32.23097     0     0     0     1
## 97  412.0000 1210.0000 29.30000 33.80000     0     0     0     1
## 98  208.0000  168.0000 12.70000 14.80000     0     1     1     0
## 99  208.0000  146.0000 11.80000 14.90000     0     1     0     1
## 100 175.0000  108.0000 10.00000 11.50000     1     0     0     1
## 101 166.0000   94.0000  9.50000 11.30000     1     0     0     1
## 102 405.0000 1085.0000 27.70000 29.90000     0     0     0     1
## 103 198.0000  188.0000 12.20000 16.94493     0     1     1     0
## 104 200.0000  154.0000 12.40000 14.40000     0     1     0     1
## 105 380.0000  810.0000 25.90000 28.70000     0     0     0     1
## 106 381.0000  905.0000 27.90000 29.10000     0     0     0     1
## 107 169.0000   94.0000  9.00000 10.20000     1     0     0     1
## 108 260.0000  420.0000 19.60000 23.90000     0     1     0     1
## 109 428.0000 1240.0000 29.10000 34.70000     0     0     0     1
## 110 400.0000  990.0000 26.90000 31.40000     0     0     0     1
## 111 265.0000  365.0000 16.80000 22.50000     0     1     0     1
## 112 177.0000   91.0000 10.20000 11.30000     1     0     0     1
## 113 381.0000 1010.0000 25.80000 31.70000     0     0     0     1
## 114 403.0000  980.0000 26.30000 29.70000     0     0     0     1
## 115 382.0000  860.0000 26.50000 29.00000     0     0     0     1
## 116 382.0000  970.0000 25.80000 29.00000     0     0     0     1
## 117 399.0000  980.0000 27.50000 29.90000     0     0     0     1
## 118 380.0000  985.0000 23.90000 29.00000     0     0     0     1
## 119 375.0000  990.0000 25.60000 30.60000     0     0     0     1
## 120 420.0000 1210.0000 27.80000 32.60000     0     0     0     1
## 121 170.0000   89.0000  8.60000 11.00000     1     0     0     1
## 122 177.0000   97.0000 10.00000 11.30000     1     0     1     0
## 123 375.0000  990.0000 28.00000 29.50000     0     0     0     1
## 124 395.0000 1170.0000 28.10000 31.70000     0     0     0     1
## 125 170.0000   93.0000 10.10000 11.20000     1     0     1     0
## 126 406.0000 1350.0000 30.50000 32.00000     0     0     0     1
## 127 414.0000 1370.0000 29.30000 33.00000     0     0     0     1
## 128 173.0000  103.0000  9.70000 19.40000     1     0     0     1
## 129 209.0000  151.0000 12.20000 13.90000     0     1     0     1
## 130 177.0000  101.0000 10.30000 12.10000     1     0     0     1
## 131 388.0000  985.0000 26.90000 29.80000     0     0     0     1
## 132 277.0000  940.0000 26.50000 30.40000     0     0     0     1
## 133 423.0000 1310.0000 27.40000 34.10000     0     0     0     1
## 134 365.0000 1035.0000 26.10000 30.80000     0     0     0     1
## 135 383.0000  965.0000 26.10000 31.80000     0     0     0     1
## 136 391.0000 1125.0000 25.40000 30.90000     0     0     0     1
## 137 389.0000  975.0000 26.40000 30.30000     0     0     0     1
## 138 392.0000 1140.0000 26.20000 29.80000     0     0     0     1
## 139 375.0000  950.0000 25.30000 29.90000     0     0     0     1
## 140 410.0000 1210.0000 28.10000 28.90000     0     0     0     1
## 141 179.0000   95.0000 10.80000 11.60000     1     0     0     1
## 142 172.0000   89.0000  9.40000 10.80000     1     0     0     1
## 143 202.0000  195.0000 12.40000 14.10000     0     1     1     0
## 144 174.0000   93.0000  9.50000 11.00000     1     0     0     1
## 145 422.0000 1205.0000 28.80000 31.30000     0     0     0     1
## 146 385.0000 1045.0000 27.60000 27.50000     0     0     0     1
## 147 363.0000 1090.0000 26.60000 28.80000     0     0     0     1
## 148 450.0000 1190.0000 30.30000 32.80000     0     0     0     1
## 149 380.0000  960.0000 25.60000 30.10000     0     0     0     1
## 150 385.0000  955.0000 26.30000 30.10000     0     0     0     1
## 151 385.0000 1110.0000 24.70000 30.20000     0     0     0     1
## 152 171.0000  100.0000 19.10000 11.50000     1     0     0     1
## 153 380.0000  900.0000 24.00000 26.50000     0     0     0     1
## 154 384.0000 1075.0000 26.50000 30.70000     0     0     0     1
## 155 373.0000  980.0000 27.90000 32.10000     0     0     0     1
## 156 381.0000  940.0000 27.80000 34.20000     0     0     0     1
## 157 363.0000 1070.0000 25.60000 30.40000     0     0     0     1
## 158 409.0000 1120.0000 29.40000 31.60000     0     0     0     1
## 159 390.0000 1060.0000 27.60000 29.00000     0     0     1     0
## 160 204.0000  168.0000 12.10000 14.30000     0     1     0     1
## 161 197.0000  211.0000 11.50000 13.90000     0     1     0     1
## 162 420.0000 1125.0000 27.20000 27.40000     0     0     0     1
## 163 381.0000 1100.0000 27.00000 28.20000     0     0     0     1
## 164 408.0000 1360.0000 30.00000 33.90000     0     0     0     1
## 165 388.0000  995.0000 26.70000 30.70000     0     0     0     1
## 166 398.0000 1095.0000 21.10000 31.40000     0     0     1     0
## 167 209.0000  196.0000 12.10000 14.60000     0     1     0     1
## 168 209.0000  176.0000 11.70000 15.10000     0     1     0     1
## 169 394.0000 1075.0000 25.50000 29.70000     0     0     1     0
## 170 204.0000  180.0000 12.30000 15.20000     0     1     1     0
## 171 204.0000  164.0000 12.30000 14.30000     0     1     0     1
## 172 209.0000  158.0000 12.20000 14.40000     0     1     0     1
## 173 394.0000 1140.0000 26.80000 29.20000     0     0     0     1
## 174 416.0000 1240.0000 27.90000 31.80000     0     0     0     1
## 175 445.0000 1465.0000 29.70000 34.60000     0     0     0     1
## 176 209.0000  169.0000 12.10000 14.50000     0     1     0     1
## 177 388.0000 1105.0000 26.70000 28.90000     0     0     0     1
## 178 397.0000 1010.0000 27.10000 31.40000     0     0     0     1
## 179 384.0000 1075.0000 26.30000 30.50000     0     0     0     1
## 180 379.0000 1060.0000 27.90000 30.90000     0     0     0     1
## 181 393.0000 1015.0000 27.60000 31.10000     0     0     0     1
## 182 386.0000 1100.0000 26.00000 30.20000     0     0     0     1
## 183 397.0000 1010.0000 25.00000 30.60000     0     0     0     1
## 184 382.0000 1000.0000 26.30000 30.10000     0     0     0     1
## 185 386.0000  980.0000 25.40000 30.20000     0     0     0     1
## 186 417.0000 1240.0000 28.70000 32.40000     0     0     0     1
## 187 403.0000 1360.0000 27.90000 33.10000     0     0     0     1
## 188 239.0000  183.0000 17.30000 19.20000     1     0     1     0
## 189 401.0000 1405.0000 29.10000 32.23097     0     0     0     1
## 190 377.0000 1055.0000 27.00000 29.10000     0     0     1     0
## 191 432.0000 1670.0000 27.10000 32.90000     0     0     1     0
## 192 390.0000 1250.0000 26.20000 30.50000     0     0     0     1
## 193 381.0000 1030.0000 25.30000 29.90000     0     0     0     1
## 194 403.0000 1040.0000 26.81197 29.90000     0     0     0     1
## 195 213.0000  190.0000 12.20000 15.50000     0     1     0     1
## 196 172.0000  105.0000 10.00000 10.80000     1     0     0     1
## 197 390.0000 1090.0000 26.20000 28.80000     0     0     0     1
## 198 204.0000  190.0000 11.80000 13.90000     0     1     0     1
## 199 386.0000 1050.0000 28.40000 29.40000     0     0     1     0
## 200 402.0000 1110.0000 26.10000 30.00000     0     0     0     1
## 201 201.0000  206.0000 12.10000 13.50000     0     1     0     1
## 202 202.0000  195.0000 12.10000 14.80000     0     1     0     1
## 203 374.0000 1010.0000 24.90000 30.10000     0     0     1     0
## 204 358.0000  880.0000 24.20000 28.70000     0     0     0     1
## 205 370.0000 1060.0000 24.30000 29.80000     0     0     0     1
## 206 390.0000  920.0000 25.70000 30.00000     0     0     0     1
## 207 398.0000 1195.0000 26.20000 29.80000     0     0     0     1
## 208 360.0000  890.0000 26.00000 28.40000     0     0     0     1
## 209 355.0000  900.0000 25.30000 29.00000     0     0     0     1
## 210 375.0000 1110.0000 22.20000 31.50000     0     0     1     0
## 211 200.0000  160.0000 10.20000 13.20000     0     1     0     1
## 212 179.0000  105.0000 10.10000 11.30000     1     0     0     1
## 213 175.0000   99.0000  9.60000 12.70000     1     0     0     1
## 214 203.0000  165.0000 12.00000 14.40000     0     1     0     1
## 215 205.0000  100.0000 12.00000 12.50000     0     1     0     1
## 216 213.0000  125.0000 11.50000 14.40000     0     1     0     1
## 217 409.0000 1100.0000 29.00000 32.60000     0     0     0     1
## 218 202.0000  147.0957 11.41111 14.24101     0     1     0     1
## 219 195.0000  155.0000 11.90000 14.60000     0     1     0     1
## 220 415.0000 1285.0000 29.50000 31.80000     0     0     0     1
## 221 236.0000  390.0000 15.10000 20.40000     1     0     1     0
## 222 363.0000  920.0000 26.80000 30.20000     0     0     0     1
## 223 381.0000 1025.0000 25.40000 30.80000     0     0     0     1
## 224 350.0000  940.0000 26.00000 29.10000     0     0     1     0
## 225 398.0000 1240.0000 28.50000 30.80000     0     0     0     1
## 226 412.0000 1160.0000 27.80000 33.00000     0     0     0     1
## 227 203.0000  150.0000 11.50000 13.90000     0     1     0     1
## 228 201.0000  130.0000 11.70000 14.40000     0     1     0     1
## 229 411.0000 1240.0000 26.80000 32.70000     0     0     0     1
## 230 373.0000  930.0000 24.40000 27.40000     0     0     0     1
## 231 178.0000   90.0000 10.90000 12.10000     1     0     0     1
## 232 415.0000 1240.0000 25.60000 31.20000     0     0     0     1
## 233 383.0000 1030.0000 25.20000 29.80000     0     0     0     1
## 234 223.0000  550.0000 18.80000 21.30000     1     0     0     1
## 235 390.0000 1250.0000 26.50000 32.00000     0     0     0     1
## 236 390.0000  999.0000 25.30000 29.80000     0     0     0     1
## 237 365.0000 1120.0000 26.50000 30.80000     0     0     1     0
## 238 345.0000 1000.0000 26.40000 30.10000     0     0     1     0
## 239 273.0000  530.0000 19.20000 24.70000     0     1     0     1
## 240 400.0000 1040.0000 27.70000 32.10000     0     0     0     1
## 241 380.0000 1150.0000 27.80000 31.10000     0     0     0     1
## 242 330.0000 1000.0000 25.90000 30.20000     0     0     0     1
## 243 410.0000 1360.0000 33.30000 28.60000     0     0     0     1
## 244 313.0000  930.0000 25.70000 28.90000     0     0     0     1
## 245 384.0000  980.0000 25.80000 30.40000     0     0     0     1
## 246 409.0000 1260.0000 27.70000 31.80000     0     0     0     1
## 247 390.0000  900.0000 27.50000 28.60000     0     0     0     1
## 248 411.0000 1300.0000 25.90000 31.90000     0     0     0     1
## 249 259.0000  470.0000 16.60000 23.40000     0     1     0     1
## 250 380.0000 1040.0000 26.40000 30.90000     0     0     1     0
## 251 370.0000  950.0000 27.30000 30.50000     0     0     0     1
## 252 415.0000 1320.0000 29.40000 33.90000     0     0     0     1
## 253 215.0000  180.0000 14.10000 12.70000     0     1     0     1
## 254 410.0000 1280.0000 27.90000 32.70000     0     0     0     1
## 255 412.0000 1310.0000 26.10000 31.10000     0     0     0     1
## 256 384.0000  910.0000 26.40000 28.40000     0     0     1     0
## 257 404.0000 1220.0000 28.60000 30.40000     0     0     0     1
## 258 375.0000  920.0000 23.80000 28.80000     0     0     0     1
## 259 410.0000 1135.0000 26.40000 32.40000     0     0     0     1
## 260 384.0000  940.0000 26.20000 29.80000     0     0     0     1
## 261 385.0000  920.0000 25.00000 32.20000     0     0     0     1
## 262 398.0000 1280.0000 28.00000 32.40000     0     0     0     1
## 263 242.4839  480.0000 17.70000 32.10000     0     0     1     0
## 264 425.0000 1220.0000 27.30000 33.00000     0     0     0     1
## 265 401.0000 1000.0000 26.70000 28.00000     0     0     0     1
## 266 387.0000 1120.0000 26.80000 50.20000     0     0     0     1
## 267 376.0000  925.0000 26.00000 30.80000     0     0     0     1
## 268 171.0000   90.0000  9.90000 11.90000     1     0     1     0
## 269 420.0000 1280.0000 27.50000 31.80000     0     0     1     0
## 270 385.0000  985.0000 27.50000 30.80000     0     0     0     1
## 271 405.0000 1350.0000 28.30000 32.60000     0     0     0     1
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## 871 380.0000 1005.0000 27.00000 31.60000     0     0     1     0
## 872 411.0000 1220.0000 28.10000 32.70000     0     0     1     0
## 873 161.0000   95.0000  9.60000 12.40000     1     0     1     0
## 874 165.0000  100.0000  9.80000 12.00000     1     0     0     1
## 875 393.0000 1265.0000 28.30000 32.70000     0     0     0     1
## 876 370.0000 1020.0000 24.60000 30.00000     0     0     0     1
## 877 230.0000  360.0000 16.00000 22.10000     1     0     1     0
## 878 365.0000  895.0000 24.50000 28.90000     0     0     0     1
## 879 371.0000 1160.0000 25.70000 28.40000     0     0     0     1
## 880 400.0000 1585.0000 29.00000 33.80000     0     0     0     1
## 881 382.0000 1140.0000 24.90000 31.60000     0     0     1     0
## 882 371.0000 1115.0000 25.30000 29.20000     0     0     1     0
## 883 370.0000 1145.0000 25.40000 30.20000     0     0     1     0
## 884 194.0000  185.0000 12.80000 14.80000     0     1     1     0
## 885 347.0000  990.0000 25.30000 29.80000     0     0     1     0
## 886 363.0000  945.0000 24.50000 32.23097     0     0     0     1
## 887 195.0000  165.0000 11.70000 14.50000     0     1     0     1
## 888 392.0000 1030.0000 26.30000 28.10000     0     0     1     0
## 889 220.0000  320.0000 15.50000 19.50000     1     0     0     1
## 890 193.0000  105.0000 13.00000 15.60000     0     1     0     1
## 891 365.0000  990.0000 26.40000 30.00000     0     0     0     1
## 892 387.0000 1065.0000 28.00000 32.70000     0     0     1     0
## 893 400.0000 1050.0000 26.10000 29.70000     0     0     0     1
## 894 362.0000  840.0000 23.20000 26.10000     0     0     0     1
## 895 198.0000  190.0000 12.20000 15.80000     0     1     0     1
## 896 190.0000  200.0000 12.70000 15.00000     0     1     0     1
## 897 197.0000  185.0000 12.80000 15.60000     0     1     0     1
## 898 370.0000 1000.0000 26.90000 31.40000     0     0     1     0
## 899 200.0000  185.0000 12.80000 15.20000     0     1     0     1
## 900 360.0000 1325.0000 26.20000 30.60000     0     0     1     0
## 901 366.0000  945.0000 25.30000 27.20000     0     0     1     0
## 902 402.0000 1350.0000 28.70000 31.00000     0     0     1     0
## 903 366.0000  805.0000 23.50000 25.70000     0     0     0     1
## 904 380.0000 1525.0000 26.00000 27.60000     0     0     0     1
## 905 190.0000  175.0000 12.70000 15.40000     0     1     0     1
## 906 360.0000  790.0000 21.90000 27.60000     0     0     0     1
## 907 369.0000  860.0000 25.20000 28.00000     0     0     0     1
## 908 199.0000 1290.0000 28.70000 32.10000     0     0     1     0

As we can observe, the transformation was successfully applied.

Now, we just need to normalize this dataset.

We must consider that dummy numerical variables should not be scaled, so we exclude them from the scaling process.

Reference:
https://stackoverflow.com/questions/74365630/how-to-avoid-scaling-dummy-variables-in-dataframe-in-r

hawks_scaled <- hawks_selected %>%
  mutate(
    Wing = scale(Wing),
    Weight = scale(Weight),
    Culmen = scale(Culmen),
    Hallux = scale(Hallux)  )
print(hawks_scaled)
##            Wing       Weight      Culmen      Hallux Sex_M Sex_F Age_A Age_I
## 1    0.72901533  0.323037860  0.53643756  0.58802795     0     0     0     1
## 2    0.63453308  0.344646534  0.68899769  0.84440031     0     0     0     1
## 3    0.68702322  0.474298581  0.67363520  0.73239710     0     0     0     1
## 4   -0.53074792 -0.649352494 -0.42394592 -0.20600240     0     1     0     1
## 5   -1.16062955 -1.297612730 -1.27457130 -1.31283258     0     1     0     1
## 6    1.01246206  0.690385326  0.92059096  0.84067397     0     0     0     1
## 7    0.57154492  0.409472558  0.48155851  0.58802795     0     0     0     1
## 8    0.62403506  0.182581475  0.74223402  0.57599719     0     0     1     0
## 9    1.01246206  0.949689421  1.03034907  0.73239710     0     0     1     0
## 10   0.93897587  0.755211350  0.57759685  0.60005871     0     0     0     1
## 11   0.81299955  0.517515930  0.61875615  0.67224329     0     0     0     1
## 12   0.58204295  0.517515930  0.49527827  0.53990490     0     0     0     1
## 13   0.78150546  0.755211350  0.97547001  0.68427405     0     0     1     0
## 14   0.81299955  0.844699836  0.87943166  0.64818176     0     0     1     0
## 15   1.05445417  0.863254723  0.64619568  1.05722770     0     0     0     1
## 16   1.26441471  1.338645562  1.19498624  1.05722770     0     0     1     0
## 17   1.07545022  0.820037374  0.72851426  0.69630482     0     0     0     1
## 18   0.68702322  0.387863883  0.97547001  0.44365880     0     0     1     0
## 19   0.65552914  0.301429185  0.53643756  0.35944346     0     0     0     1
## 20   0.84449363  0.517515930  0.30320157  0.20304354     0     0     0     1
## 21   0.87598771  0.647167977  0.63247591  0.72036634     0     0     0     1
## 22   1.05445417  0.906472072  0.96175025  0.76848939     0     0     0     1
## 23   1.04395614 -1.446712584  0.42667945  0.66021253     0     0     0     1
## 24   0.80250152  1.208993515  0.71479450  0.61208948     0     0     1     0
## 25   0.67652519  0.474298581  0.57759685  0.57599719     0     0     0     1
## 26  -1.49656641 -1.448873451 -1.42396428 -1.31993010     1     0     0     1
## 27   0.87598771  0.711994001  0.60503638  0.87676626     0     0     0     1
## 28   0.89698376  0.906472072  0.93431072  0.76848939     0     0     1     0
## 29  -1.16062955 -1.276004055 -1.38432941 -1.22861724     0     1     0     1
## 30   1.16993247  1.554732307  1.14010718  0.86473550     0     0     0     1
## 31   0.83399560  0.582341954  0.72851426  0.74442787     0     0     1     0
## 32   0.48756071  0.106951114  0.42667945  0.32335117     0     0     0     1
## 33   0.84449363  0.560733279  0.57759685  0.53990490     0     0     1     0
## 34   0.79200349  1.144167491  0.50899803  0.86473550     0     0     1     0
## 35   1.02296009  1.576340982  0.64619568  0.73239710     0     0     1     0
## 36   0.58204295  0.668776652  0.48155851  0.23913583     0     0     1     0
## 37   0.72901533  1.187384840  0.75595379  0.58802795     0     0     1     0
## 38   0.65552914  1.554732307  0.49527827  0.73239710     0     0     1     0
## 39   1.05445417  1.576340982  1.00290954  0.67224329     0     0     1     0
## 40  -1.28660587 -1.448873451 -1.71360375 -1.31993010     1     0     0     1
## 41  -1.51756247 -1.474803861 -1.65872469 -1.64969394     1     0     0     1
## 42  -0.86668479 -0.964839142 -0.79437955 -0.71129444     0     0     0     1
## 43   0.71851730  0.625559303  0.59131662  0.72036634     0     0     0     1
## 44   0.69752125  0.798428699  0.45411898  0.50381261     0     0     0     1
## 45   0.78150546  0.560733279  0.79711308  0.61208948     0     0     0     1
## 46   0.78150546  0.495907256  0.45411898  0.37147422     0     0     0     1
## 47   0.81299955  0.603950628  0.94803048  0.55193566     0     0     0     1
## 48   0.65552914  0.582341954  0.60503638  0.72036634     0     0     0     1
## 49   0.86548968  0.733602675  0.64619568  0.68427405     0     0     0     1
## 50   1.01246206  1.144167491  0.83827237  0.76247401     0     0     0     1
## 51   0.88648573  0.452689907  0.53643756  0.49178185     0     0     0     1
## 52   1.11744233  0.755211350  0.63247591  0.37147422     0     0     0     1
## 53  -1.19212363 -1.375403958 -1.28829106 -1.38501716     0     1     0     1
## 54   0.82349757  1.079341468  0.82455261  0.76848939     0     0     0     1
## 55   0.56104690  0.236603161  0.44039921  0.15492049     0     0     0     1
## 56  -0.66722227 -0.930265263 -0.79437955 -0.53083300     0     1     0     1
## 57  -0.79319860 -0.930265263 -0.78065979 -0.71129444     1     0     1     0
## 58   0.99146601  1.046928456  1.08522813  0.74442787     0     0     0     1
## 59  -0.78270057  1.187384840  0.93431072  1.34596601     0     0     0     1
## 60   0.97046995  1.187384840  1.12638742  0.98504313     0     0     0     1
## 61  -2.92219849  0.884863397 -0.21814946  0.17296663     0     0     0     1
## 62   0.67652519 -0.022700933  0.37180039  0.10679744     0     0     0     1
## 63   0.84449363  1.036124119  0.65991544  0.87676626     0     0     0     1
## 64   0.10963173  0.661124977  0.46783874  0.29928964     0     0     0     1
## 65  -1.65403682 -1.448873451 -1.50780728 -1.77000157     1     0     0     1
## 66   1.05445417  1.144167491  0.75595379  0.90082778     0     0     0     1
## 67  -0.46775976 -0.638548157 -0.49254474 -0.05561786     0     1     0     1
## 68  -1.46507233 -1.448873451 -1.64500493 -1.69781700     1     0     1     0
## 69  -1.27610784 -1.340003865 -1.42548870 -1.32486335     0     1     1     0
## 70   0.78150546  0.668776652  1.15382695  0.46772032     0     0     1     0
## 71   0.79200349  0.776820025  0.63247591  0.50381261     0     0     1     0
## 72   0.75001138  0.841646048  0.68735497  0.69630482     0     0     1     0
## 73   1.09644628  1.241406527  1.05778860  1.09331999     0     0     0     1
## 74   1.25391668  1.327841225  1.48310128  0.64818176     0     0     1     0
## 75   0.88648573  0.949689421  0.50899803  0.40756651     0     0     1     0
## 76   0.86548968  1.479101947  0.85199214  0.75645863     0     0     0     1
## 77   0.83399560  0.884863397  0.44039921  0.44365880     0     0     0     1
## 78   0.99146601  1.576340982  0.72851426  0.96098160     0     0     0     1
## 79   0.56104690  0.549928942  0.72851426  0.75645863     0     0     0     1
## 80   0.59254098  0.344646534  0.59131662  0.70833558     0     0     0     1
## 81   1.04395614  1.273819539  0.93431072  0.99707389     0     0     0     1
## 82   1.01246206  1.046928456  0.81083284  0.88879702     0     0     0     1
## 83  -1.16062955 -1.245751911 -1.26085153 -1.30080182     0     1     0     1
## 84  -1.17112757 -1.321382272 -1.27457130 -1.25267877     0     1     0     1
## 85  -1.52806050 -1.470482126 -1.68616422 -1.67375547     1     0     0     1
## 86  -0.86668479 -0.930265263 -0.54742380 -0.69926368     1     0     1     0
## 87   0.62403506  0.636363640  0.56387709  0.57599719     0     0     0     1
## 88   0.72901533  0.766015687 -0.30046805  0.74442787     0     0     0     1
## 89   1.11744233  1.230602190  0.94803048  0.81661244     0     0     0     1
## 90   0.79200349  0.603950628  0.65991544  0.84067397     0     0     0     1
## 91   0.99146601  0.949689421  0.78339332  0.84440031     0     0     0     1
## 92   0.72901533  0.452689907  0.68735497  0.31132040     0     0     0     1
## 93   0.68702322  0.495907256  0.50899803  0.55193566     0     0     0     1
## 94   1.05445417  1.338645562  0.86571190  0.73239710     0     0     1     0
## 95   0.94947390  1.090145805  0.98918978  1.02113541     0     0     0     1
## 96   1.07545022  0.884863397  1.14010718  0.84440031     0     0     0     1
## 97   1.01246206  0.949689421  1.03034907  1.03316618     0     0     0     1
## 98  -1.12913547 -1.301934465 -1.24713177 -1.25267877     0     1     1     0
## 99  -1.12913547 -1.349473549 -1.37060964 -1.24064801     0     1     0     1
## 100 -1.47557036 -1.431586512 -1.61756540 -1.64969394     1     0     0     1
## 101 -1.57005260 -1.461838656 -1.68616422 -1.67375547     1     0     0     1
## 102  0.93897587  0.679580989  0.81083284  0.56396642     0     0     0     1
## 103 -1.23411574 -1.258717116 -1.31573059 -0.99462762     0     1     1     0
## 104 -1.21311968 -1.332186609 -1.28829106 -1.30080182     0     1     0     1
## 105  0.67652519  0.085342440  0.56387709  0.41959727     0     0     0     1
## 106  0.68702322  0.290624848  0.83827237  0.46772032     0     0     0     1
## 107 -1.53855852 -1.461838656 -1.75476304 -1.80609386     1     0     0     1
## 108 -0.58323806 -0.757395867 -0.30046805 -0.15787935     0     1     0     1
## 109  1.18043049  1.014515444  1.00290954  1.14144304     0     0     0     1
## 110  0.88648573  0.474298581  0.70107473  0.74442787     0     0     0     1
## 111 -0.53074792 -0.876243577 -0.68462144 -0.32631003     0     1     0     1
## 112 -1.45457431 -1.468321258 -1.59012587 -1.67375547     1     0     0     1
## 113  0.68702322  0.517515930  0.55015733  0.78052016     0     0     0     1
## 114  0.91797982  0.452689907  0.61875615  0.53990490     0     0     0     1
## 115  0.69752125  0.193385812  0.64619568  0.45568956     0     0     0     1
## 116  0.69752125  0.431081232  0.55015733  0.45568956     0     0     0     1
## 117  0.87598771  0.452689907  0.78339332  0.56396642     0     0     0     1
## 118  0.67652519  0.463494244  0.28948181  0.45568956     0     0     0     1
## 119  0.62403506  0.474298581  0.52271780  0.64818176     0     0     0     1
## 120  1.09644628  0.949689421  0.82455261  0.88879702     0     0     0     1
## 121 -1.52806050 -1.472642993 -1.80964209 -1.70984776     1     0     0     1
## 122 -1.45457431 -1.455356054 -1.61756540 -1.67375547     1     0     1     0
## 123  0.62403506  0.474298581  0.85199214  0.51584337     0     0     0     1
## 124  0.83399560  0.863254723  0.86571190  0.78052016     0     0     0     1
## 125 -1.52806050 -1.463999524 -1.60384563 -1.68578623     1     0     1     0
## 126  0.94947390  1.252210864  1.19498624  0.81661244     0     0     0     1
## 127  1.03345811  1.295428213  1.03034907  0.93692007     0     0     0     1
## 128 -1.49656641 -1.442390849 -1.65872469 -0.69926368     1     0     0     1
## 129 -1.11863744 -1.338669211 -1.31573059 -1.36095563     0     1     0     1
## 130 -1.45457431 -1.446712584 -1.57640611 -1.57750937     1     0     0     1
## 131  0.76050941  0.463494244  0.70107473  0.55193566     0     0     0     1
## 132 -0.40477160  0.366255209  0.64619568  0.62412024     0     0     0     1
## 133  1.12794036  1.165776166  0.76967355  1.06925847     0     0     0     1
## 134  0.51905479  0.571537617  0.59131662  0.67224329     0     0     0     1
## 135  0.70801927  0.420276895  0.59131662  0.79255092     0     0     0     1
## 136  0.79200349  0.766015687  0.49527827  0.68427405     0     0     0     1
## 137  0.77100744  0.441885569  0.63247591  0.61208948     0     0     0     1
## 138  0.80250152  0.798428699  0.60503638  0.55193566     0     0     0     1
## 139  0.62403506  0.387863883  0.48155851  0.56396642     0     0     0     1
## 140  0.99146601  0.949689421  0.86571190  0.44365880     0     0     0     1
## 141 -1.43357825 -1.459677789 -1.50780728 -1.63766318     1     0     0     1
## 142 -1.50706444 -1.472642993 -1.69988398 -1.73390928     1     0     0     1
## 143 -1.19212363 -1.243591043 -1.28829106 -1.33689411     0     1     1     0
## 144 -1.48606839 -1.463999524 -1.68616422 -1.70984776     1     0     0     1
## 145  1.11744233  0.938885083  0.96175025  0.73239710     0     0     0     1
## 146  0.72901533  0.593146291  0.79711308  0.27522812     0     0     0     1
## 147  0.49805873  0.690385326  0.65991544  0.43162803     0     0     0     1
## 148  1.41138709  0.906472072  1.16754671  0.91285855     0     0     0     1
## 149  0.67652519  0.409472558  0.52271780  0.58802795     0     0     0     1
## 150  0.72901533  0.398668220  0.61875615  0.58802795     0     0     0     1
## 151  0.72901533  0.733602675  0.39923992  0.60005871     0     0     0     1
## 152 -1.51756247 -1.448873451 -0.36906687 -1.64969394     1     0     0     1
## 153  0.67652519  0.279820510  0.30320157  0.15492049     0     0     0     1
## 154  0.71851730  0.657972315  0.64619568  0.66021253     0     0     0     1
## 155  0.60303900  0.452689907  0.83827237  0.82864321     0     0     0     1
## 156  0.68702322  0.366255209  0.82455261  1.08128923     0     0     0     1
## 157  0.49805873  0.647167977  0.52271780  0.62412024     0     0     0     1
## 158  0.98096798  0.755211350  1.04406883  0.76848939     0     0     0     1
## 159  0.78150546  0.625559303  0.79711308  0.45568956     0     0     1     0
## 160 -1.17112757 -1.301934465 -1.32945035 -1.31283258     0     1     0     1
## 161 -1.24461376 -1.209017164 -1.41176894 -1.36095563     0     1     0     1
## 162  1.09644628  0.766015687  0.74223402  0.26319735     0     0     0     1
## 163  0.68702322  0.711994001  0.71479450  0.35944346     0     0     0     1
## 164  0.97046995  1.273819539  1.12638742  1.04519694     0     0     0     1
## 165  0.76050941  0.485102918  0.67363520  0.66021253     0     0     0     1
## 166  0.86548968  0.701189664 -0.09467158  0.74442787     0     0     1     0
## 167 -1.11863744 -1.241430176 -1.32945035 -1.27674029     0     1     0     1
## 168 -1.11863744 -1.284647525 -1.38432941 -1.21658648     0     1     0     1
## 169  0.82349757  0.657972315  0.50899803  0.53990490     0     0     1     0
## 170 -1.17112757 -1.276004055 -1.30201082 -1.20455572     0     1     1     0
## 171 -1.17112757 -1.310577934 -1.30201082 -1.31283258     0     1     0     1
## 172 -1.11863744 -1.323543139 -1.31573059 -1.30080182     0     1     0     1
## 173  0.82349757  0.798428699  0.68735497  0.47975108     0     0     0     1
## 174  1.05445417  1.014515444  0.83827237  0.79255092     0     0     0     1
## 175  1.35889695  1.500710621  1.08522813  1.12941228     0     0     0     1
## 176 -1.11863744 -1.299773597 -1.32945035 -1.28877106     0     1     0     1
## 177  0.76050941  0.722798338  0.67363520  0.44365880     0     0     0     1
## 178  0.85499165  0.517515930  0.72851426  0.74442787     0     0     0     1
## 179  0.71851730  0.657972315  0.61875615  0.63615100     0     0     0     1
## 180  0.66602717  0.625559303  0.83827237  0.68427405     0     0     0     1
## 181  0.81299955  0.528320267  0.79711308  0.70833558     0     0     0     1
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## 613  0.55054887  0.290624848  0.68735497  0.21507430     0     0     1     0
## 614  0.64503111  0.766015687  0.48155851  0.51584337     0     0     0     1
## 615  0.61353703  0.387863883  0.74223402  0.55193566     0     0     0     1
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## 617  0.49805873  0.506711593  0.44039921  0.76848939     0     0     0     1
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## 639 -1.22361771 -1.330025742 -1.35688988 -1.28877106     0     1     0     1
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## 643 -0.89817887 -0.930265263 -0.78065979 -0.60301757     1     0     1     0
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## 647  0.72901533  0.679580989  0.78339332  0.67224329     0     0     1     0
## 648  0.56104690  0.431081232  0.59131662  0.62412024     0     0     0     1
## 649  0.65552914  0.560733279  0.92059096  0.80458168     0     0     0     1
## 650  0.60303900  0.528320267  0.50899803  0.52787414     0     0     0     1
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## 652  1.03345811  0.960493758  0.63247591  0.47975108     0     0     0     1
## 653 -1.18162560 -1.265199718 -1.13737365 -1.32486335     0     1     1     0
## 654 -1.61204471 -1.459677789 -1.59012587 -1.70984776     1     0     1     0
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## 665  0.95997192  1.003711107  1.14010718  1.27378143     0     0     0     1
## 666  0.63453308  0.614754966  1.05778860  0.84067397     0     0     0     1
## 667  0.67652519  0.722798338  0.02880629  0.67224329     0     0     0     1
## 668 -1.50706444 -1.405656102 -1.64500493 -1.61360166     1     0     1     0
## 669  0.97046995  1.338645562  0.90687119  0.90082778     0     0     0     1
## 670 -1.55955458 -1.438069114 -1.57640611 -1.73390928     1     0     1     0
## 671  0.61353703  0.668776652  0.64619568  0.73239710     0     0     1     0
## 672  0.63453308  0.301429185  0.59131662  0.84067397     0     0     0     1
## 673 -0.60423411 -0.606135145 -0.51998427 -0.12178706     0     1     0     1
## 674  0.57154492  0.160972801  0.44039921  0.26319735     0     0     0     1
## 675 -1.19212363 -1.286808392 -1.16481318 -1.24064801     0     1     1     0
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## 677 -1.21311968 -1.276004055 -1.35688988 -1.40907869     0     1     1     0
## 678  0.59254098  2.721600732  0.60503638  0.60005871     0     0     0     1
## 679  0.65552914  0.409472558  0.38552016  0.57599719     0     0     1     0
## 680 -0.64622622 -0.552113459 -0.31418781 -0.16991011     0     1     1     0
## 681  0.47706268  0.431081232  0.61875615  0.66021253     0     0     0     1
## 682  0.77100744  1.068537131  0.65991544  0.64818176     0     0     1     0
## 683  0.92847784  1.144167491  1.04406883  0.91285855     0     0     1     0
## 684 -1.26560982 -1.297612730 -1.21969224 -1.26470953     0     1     0     1
## 685 -1.18162560 -1.252234513 -1.13737365 -1.16846343     0     1     0     1
## 686 -0.65672425 -0.498091772 -0.36906687 -0.31427927     0     1     1     0
## 687 -1.22361771 -1.265199718 -1.34317012 -1.24064801     0     1     0     1
## 688 -1.27610784 -1.308417067 -1.35688988 -1.30080182     0     1     0     1
## 689 -1.25511179 -1.221982369 -1.31573059 -1.34892487     0     1     1     0
## 690 -1.54905655 -1.459677789 -1.56268634 -1.57750937     1     0     0     1
## 691  0.83399560  0.863254723  0.55015733  0.63615100     0     0     1     0
## 692  0.55054887  0.657972315  0.81083284  0.78052016     0     0     0     1
## 693 -1.10813941 -1.232786706 -1.32945035 -1.19252495     0     1     0     1
## 694  0.89698376  0.420276895  0.55015733  0.46772032     0     0     0     1
## 695  0.41407452  0.031320753  0.12484464 -0.02554096     0     0     0     1
## 696  0.64503111  0.701189664  0.52271780  0.78052016     0     0     1     0
## 697 -1.24461376 -1.319221404 -1.34317012 -1.26470953     0     1     0     1
## 698 -1.51756247 -1.459677789 -1.74104327 -1.64969394     1     0     0     1
## 699 -0.40477160  1.576340982  1.08522813  0.82864321     0     0     1     0
## 700  1.25391668  1.781623390  0.76967355  1.11738152     0     0     1     0
## 701  0.59254098  0.463494244  0.49527827  0.69630482     0     0     0     1
## 702 -0.58323806 -0.444070086 -0.24558899 -0.12178706     0     1     1     0
## 703  0.78150546 -1.146352008  0.46783874  0.49178185     0     0     0     1
## 704  0.45606662  0.225798824  0.57759685  0.70833558     0     0     0     1
## 705  0.81299955  0.982102432  0.98918978  0.98504313     0     0     0     1
## 706  0.90748179  1.046928456  1.20870600  1.12941228     0     0     0     1
## 707  0.48756071  0.387863883  0.68735497  0.66021253     0     0     0     1
## 708 -0.92967295 -0.951873937 -0.79437955 -0.80754054     1     0     0     1
## 709  0.45606662  0.269016173  0.78339332  0.58802795     0     0     1     0
## 710 -1.68553090 -1.448873451 -1.64500493 -1.58954013     1     0     0     1
## 711 -0.57274003 -0.681765506 -0.64346215  0.19101278     0     1     0     1
## 712 -1.63304077 -1.470482126 -1.57640611 -1.64969394     1     0     0     1
## 713 -1.57005260 -1.438069114 -1.43920846 -1.66172471     1     0     0     1
## 714  0.48756071  1.154971829  0.87943166  1.09331999     0     0     0     1
## 715  0.62403506  0.441885569  0.74223402  0.79255092     0     0     0     1
## 716  0.76050941  0.895667734  0.97547001  1.09331999     0     0     0     1
## 717  0.80250152  0.560733279  0.59131662  0.63615100     0     0     0     1
## 718  1.01246206  0.960493758  0.94803048  1.06925847     0     0     0     1
## 719  0.58204295  0.657972315  0.70107473  0.91285855     0     0     0     1
## 720 -0.63572819  0.409472558 -0.28674828  2.11593483     0     1     1     0
## 721  0.79200349  0.052929428  0.34436087  0.28725888     0     0     0     1
## 722 -1.31809995 -1.276004055 -1.31573059 -1.32486335     0     1     0     1
## 723  0.72901533  0.982102432  0.82455261  0.81661244     0     0     0     1
## 724 -1.57005260 -1.427264777 -1.61756540 -1.60157089     1     0     0     1
## 725 -1.24461376 -1.308417067 -1.31573059 -1.24064801     0     1     1     0
## 726  0.57154492  0.323037860  0.61875615  0.81661244     0     0     0     1
## 727 -1.31809995 -1.297612730 -1.34317012 -1.22861724     0     1     0     1
## 728  0.88648573  1.176580503  1.07150836  1.05722770     0     0     0     1
## 729 -1.61204471 -1.448873451 -1.69988398 -1.69781700     1     0     0     1
## 730 -1.27610784 -1.330025742 -1.27457130 -1.28877106     0     1     0     1
## 731  0.83399560  0.830841711  1.11266765  1.10535075     0     0     0     1
## 732  0.91797982  0.841646048  0.98918978  0.85270473     0     0     0     1
## 733  0.73951336  0.398668220  0.83827237  0.62412024     0     0     0     1
## 734 -1.28660587 -1.254395381 -1.19225271 -1.24064801     0     1     1     0
## 735 -1.18162560 -1.276004055 -1.09621436 -1.26470953     0     1     1     0
## 736 -1.64353879 -1.470482126 -1.61756540 -1.64969394     1     0     1     0
## 737 -1.60154668 -1.448873451 -1.64500493 -1.62563242     1     0     0     1
## 738 -1.30760193 -1.254395381 -1.28829106 -1.25267877     1     0     1     0
## 739 -1.57005260 -1.438069114 -1.57640611 -1.58954013     1     0     0     1
## 740  0.47706268  0.560733279  0.71479450  0.63615100     0     0     0     1
## 741 -0.58323806 -0.444070086 -0.28674828  3.52353409     0     1     1     0
## 742 -0.85618676 -0.843830565 -1.28829106 -0.39849461     1     0     1     0
## 743  0.64503111  0.582341954  0.86571190  0.68427405     0     0     0     1
## 744  0.47706268  0.301429185  0.34436087  0.27522812     0     0     0     1
## 745  0.62403506  0.506711593  0.57759685  0.87676626     0     0     0     1
## 746 -1.28660587 -1.276004055 -1.35688988 -1.31283258     0     1     0     1
## 747 -1.25511179 -1.286808392 -1.28829106 -1.15643267     0     1     0     1
## 748 -1.64353879 -1.438069114 -1.64500493 -1.70984776     1     0     0     1
## 749 -1.29710390 -1.254395381 -1.37060964 -1.32486335     0     1     0     1
## 750  0.89698376  1.036124119  0.87943166  1.21362762     0     0     0     1
## 751 -1.23411574 -1.265199718 -1.26085153 -1.20455572     0     1     0     1
## 752  0.95997192  1.090145805  0.78339332  1.02113541     0     0     0     1
## 753 -1.61204471 -1.438069114 -1.64500493 -1.52938631     1     0     0     1
## 754 -1.53855852 -0.282005027 -0.69834120 -0.19397164     0     1     1     0
## 755 -1.54905655 -1.448873451 -1.54896658 -1.74594005     1     0     0     1
## 756 -1.54905655 -1.438069114 -1.52152705 -1.63766318     1     0     1     0
## 757 -0.97166506 -0.822221890 -0.80809932 -0.55489452     1     0     1     0
## 758  0.62403506  0.560733279  0.70107473  0.73239710     0     0     0     1
## 759  0.94947390  1.122558817  1.03034907  0.97301236     0     0     1     0
## 760  0.73951336  0.539124605  0.70107473  0.76848939     0     0     0     1
## 761 -1.63304077 -1.438069114 -1.63128516 -1.66172471     1     0     1     0
## 762  0.65552914  0.614754966  0.64619568  0.56396642     0     0     0     1
## 763 -1.28660587 -1.265199718 -1.30201082 -1.25267877     0     1     1     0
## 764  0.66602717  0.517515930  0.44039921  0.49178185     0     0     0     1
## 765  0.50855676  0.528320267  0.42667945  0.51584337     0     0     0     1
## 766  0.36158438  0.744407013  1.05778860  0.61208948     0     0     1     0
## 767  0.67652519  1.187384840  0.67363520  0.76848939     0     0     0     1
## 768  0.83399560  0.884863397  1.16754671  0.98504313     0     0     1     0
## 769  0.59254098  0.809233036  0.56387709  0.84067397     0     0     0     1
## 770  0.63453308  0.485102918  0.85199214  0.60005871     0     0     0     1
## 771  0.54005084  0.593146291  0.59131662  0.63615100     0     0     0     1
## 772 -0.89817887 -0.930265263 -0.79437955 -0.68723291     1     0     0     1
## 773  0.52955281  0.355450871  0.53643756  0.22710506     0     0     0     1
## 774  0.73951336  0.636363640  0.59131662  0.69630482     0     0     0     1
## 775  0.62403506  0.733602675  0.81083284  0.73239710     0     0     0     1
## 776 -1.22361771 -1.254395381 -1.34317012 -1.20455572     0     1     0     1
## 777  0.93897587  1.046928456  0.83827237  0.79255092     0     0     1     0
## 778  0.58204295  0.528320267  0.42667945  0.38350498     0     0     1     0
## 779 -1.28660587 -1.254395381 -1.31573059 -1.20455572     0     1     0     1
## 780  0.36158438  0.409472558  0.65991544  0.56396642     0     0     0     1
## 781 -1.28660587 -1.232786706 -1.43920846 -1.40907869     0     1     0     1
## 782  0.55054887  0.690385326  0.75595379  0.62412024     0     0     1     0
## 783 -1.37059009 -1.297612730 -1.34317012 -1.26470953     1     0     0     1
## 784  0.59254098  0.679580989  0.49527827  0.55193566     0     0     0     1
## 785  0.84449363  0.636363640  0.81083284  0.57599719     0     0     0     1
## 786  0.51905479  0.766015687  0.70107473  0.49178185     0     0     0     1
## 787  0.61353703  0.603950628  0.50899803  0.61208948     0     0     0     1
## 788 -0.65672425 -0.530504784 -0.31418781 -0.20600240     0     1     0     1
## 789  0.59254098  0.452689907  0.63247591  0.45568956     0     0     0     1
## 790  0.63453308  0.884863397  0.35808063  0.66021253     0     0     0     1
## 791 -1.57005260 -1.416460440 -1.63128516 -1.63766318     1     0     0     1
## 792  0.56104690  0.701189664  0.65991544  0.38350498     0     0     0     1
## 793  0.79200349  1.208993515  0.68735497  0.58802795     0     0     1     0
## 794 -1.28660587 -1.265199718 -1.32945035 -1.24064801     0     1     0     1
## 795  0.85499165  0.711994001  0.04252606  0.43162803     0     0     1     0
## 796  0.52955281  0.744407013  0.72851426 -0.50677147     0     0     0     1
## 797  0.72901533  1.360254237  1.16754671  0.97301236     0     0     1     0
## 798  0.88648573  0.874059060  0.79711308  0.88879702     0     0     0     1
## 799 -1.23411574 -1.265199718 -1.37060964 -1.21658648     0     1     0     1
## 800  0.51905479  0.431081232  0.56387709  0.76848939     0     0     1     0
## 801 -1.27610784 -1.297612730 -1.39804917 -1.34892487     0     1     0     1
## 802 -1.26560982 -1.286808392 -1.34317012 -1.15643267     0     1     0     1
## 803 -1.21311968 -1.308417067 -1.41176894 -1.28877106     0     1     0     1
## 804  0.71851730  1.057732793  0.93431072  0.87676626     0     0     0     1
## 805 -1.64353879 -1.427264777 -1.63128516 -1.69781700     1     0     0     1
## 806 -1.62254274 -1.448873451 -1.71360375 -1.64969394     1     0     0     1
## 807 -1.30760193 -1.254395381 -1.30201082 -1.25267877     0     1     0     1
## 808 -1.04515125 -1.005895624 -0.79437955 -0.57895605     1     0     0     1
## 809 -0.62523017 -0.562917796 -0.41022616 -0.23006392     0     1     0     1
## 810 -1.62254274 -1.470482126 -1.68616422 -1.67375547     1     0     0     1
## 811  0.84449363  0.917276409  0.71479450 -0.16991011     0     0     1     0
## 812  0.79200349  0.571537617  0.83827237  0.94895084     0     0     0     1
## 813 -1.63304077 -1.470482126 -1.78220257 -1.66172471     1     0     0     1
## 814 -1.39158614 -1.319221404 -1.24713177 -1.27674029     1     0     0     1
## 815 -1.67503287 -1.481286463 -1.65872469 -1.70984776     1     0     0     1
## 816  0.81299955  0.830841711  0.89315143  0.68427405     0     0     0     1
## 817  0.85499165  1.057732793  0.82455261  0.92488931     0     0     0     1
## 818 -1.64353879 -1.459677789 -1.76848280 -1.78203234     1     0     0     1
## 819 -0.63572819 -0.714178518 -0.43766569 -0.29021774     0     1     0     1
## 820 -1.24461376 -1.286808392 -1.61756540 -1.24064801     1     0     0     1
## 821 -1.02415519 -1.027504298 -0.78065979 -0.69926368     1     0     0     1
## 822 -1.25511179 -1.319221404 -1.26085153 -1.28877106     0     1     0     1
## 823  0.71851730  0.517515930  0.68735497  0.70833558     0     0     0     1
## 824  0.72901533  0.474298581  0.57759685  0.52787414     0     0     0     1
## 825 -1.41258220 -1.340830079 -1.42548870 -1.31283258     1     0     0     1
## 826 -0.95066901 -1.016699961 -0.79437955 -0.61504834     1     0     0     1
## 827  0.66602717  0.377059546  0.37180039  0.73239710     0     0     0     1
## 828 -1.20262166 -1.258717116 -1.38432941 -1.24064801     0     1     0     1
## 829 -1.62254274 -1.459677789 -1.53524681 -1.64969394     1     0     0     1
## 830 -0.89817887 -0.951873937 -0.83553885 -0.69926368     1     0     1     0
## 831 -1.64353879 -1.459677789 -1.63128516 -1.68578623     1     0     0     1
## 832  0.54005084  0.431081232  0.63247591  0.63615100     0     0     0     1
## 833  0.84449363  1.014515444  0.97547001  0.91285855     0     0     0     1
## 834 -1.66453485 -1.438069114 -1.61756540 -1.64969394     1     0     0     1
## 835 -1.30760193 -1.308417067 -1.41176894 -1.24064801     0     1     0     1
## 836 -1.30760193 -1.297612730 -1.32945035 -1.21658648     0     1     0     1
## 837 -1.54905655 -1.448873451 -1.59012587 -1.60157089     1     0     0     1
## 838  1.18043049  1.122558817  0.90687119  1.04519694     0     0     0     1
## 839 -0.66722227 -0.649352494 -0.31418781  0.38350498     0     1     1     0
## 840 -1.29710390 -1.286808392 -1.38432941 -1.32486335     0     1     1     0
## 841 -1.26560982 -1.243591043 -1.12365389 -1.34892487     0     1     1     0
## 842 -0.86668479 -0.941069600 -0.75322026 -0.47067918     1     0     1     0
## 843  0.50855676  0.820037374  0.59131662  0.35944346     0     0     1     0
## 844  0.57154492  0.409472558  0.49527827  0.62412024     0     0     0     1
## 845  0.88648573  0.776820025  0.89315143  0.50381261     0     0     0     1
## 846  0.62403506  0.333842197  0.49527827  0.40756651     0     0     0     1
## 847  0.86548968  0.938885083  0.79711308  0.98504313     0     0     0     1
## 848  0.72901533  0.582341954  0.74223402  0.75645863     0     0     0     1
## 849 -1.67503287 -1.448873451 -1.63128516 -1.68578623     1     0     0     1
## 850 -0.89817887 -0.941069600 -0.75322026 -0.66317139     1     0     0     1
## 851 -1.00315914 -0.941069600 -0.76694002 -0.62707910     1     0     0     1
## 852 -1.60154668 -1.438069114 -1.57640611 -1.62563242     1     0     0     1
## 853  0.63453308  0.193385812  0.52271780  0.57599719     0     0     0     1
## 854  0.46656465  0.355450871  0.55015733  0.57599719     0     0     0     1
## 855  0.59254098  0.517515930  0.34436087  0.45568956     0     0     1     0
## 856  0.88648573  1.111754480  1.08522813  0.99707389     0     0     0     1
## 857 -1.27610784 -1.211178032 -1.20597248 -1.28877106     0     1     1     0
## 858  0.57154492  0.128559789  0.24832252  0.31132040     0     0     0     1
## 859 -1.63304077 -1.459677789 -1.59012587 -1.68578623     1     0     0     1
## 860  0.91797982  1.252210864  0.85199214  0.91285855     0     0     0     1
## 861  0.62403506  0.517515930  0.44039921  0.67224329     0     0     0     1
## 862  0.60303900  0.409472558  0.81083284  0.87676626     0     0     0     1
## 863  0.72901533  1.295428213  0.63247591  0.47975108     0     0     0     1
## 864 -1.81150723 -1.297612730 -1.23341200 -1.36095563     0     1     0     1
## 865 -1.61204471 -1.448873451 -1.79592233 -1.66172471     1     0     0     1
## 866  0.80250152  1.036124119  0.93431072  0.92488931     0     0     0     1
## 867  0.59254098  0.312233522  0.39923992  0.35944346     0     0     0     1
## 868  0.62403506  0.171777138  0.44039921  0.33538193     0     0     0     1
## 869  1.04395614  1.111754480  1.04406883  1.05722770     0     0     0     1
## 870 -1.62254274 -1.459677789 -1.64500493 -1.62563242     1     0     1     0
## 871  0.67652519  0.506711593  0.71479450  0.76848939     0     0     1     0
## 872  1.00196403  0.971298095  0.86571190  0.90082778     0     0     1     0
## 873 -1.62254274 -1.459677789 -1.67244445 -1.54141708     1     0     1     0
## 874 -1.58055063 -1.448873451 -1.64500493 -1.58954013     1     0     0     1
## 875  0.81299955  1.068537131  0.89315143  0.90082778     0     0     0     1
## 876  0.57154492  0.539124605  0.38552016  0.57599719     0     0     0     1
## 877 -0.89817887 -0.887047914 -0.79437955 -0.37443308     1     0     1     0
## 878  0.51905479  0.269016173  0.37180039  0.44365880     0     0     0     1
## 879  0.58204295  0.841646048  0.53643756  0.38350498     0     0     0     1
## 880  0.88648573  1.760014715  0.98918978  1.03316618     0     0     0     1
## 881  0.69752125  0.798428699  0.42667945  0.76848939     0     0     1     0
## 882  0.58204295  0.744407013  0.48155851  0.47975108     0     0     1     0
## 883  0.57154492  0.809233036  0.49527827  0.60005871     0     0     1     0
## 884 -1.27610784 -1.265199718 -1.23341200 -1.25267877     0     1     1     0
## 885  0.33009030  0.474298581  0.48155851  0.55193566     0     0     1     0
## 886  0.49805873  0.377059546  0.37180039  0.84440031     0     0     0     1
## 887 -1.26560982 -1.308417067 -1.38432941 -1.28877106     0     1     0     1
## 888  0.80250152  0.560733279  0.61875615  0.34741269     0     0     1     0
## 889 -1.00315914 -0.973482612 -0.86297837 -0.68723291     1     0     0     1
## 890 -1.28660587 -1.438069114 -1.20597248 -1.15643267     0     1     0     1
## 891  0.51905479  0.474298581  0.63247591  0.57599719     0     0     0     1
## 892  0.75001138  0.636363640  0.85199214  0.90082778     0     0     1     0
## 893  0.88648573  0.603950628  0.59131662  0.53990490     0     0     0     1
## 894  0.48756071  0.150168463  0.19344346  0.10679744     0     0     0     1
## 895 -1.23411574 -1.254395381 -1.31573059 -1.13237114     0     1     0     1
## 896 -1.31809995 -1.232786706 -1.24713177 -1.22861724     0     1     0     1
## 897 -1.24461376 -1.265199718 -1.23341200 -1.15643267     0     1     0     1
## 898  0.57154492  0.495907256  0.70107473  0.74442787     0     0     1     0
## 899 -1.21311968 -1.265199718 -1.23341200 -1.20455572     0     1     0     1
## 900  0.46656465  1.198189178  0.60503638  0.64818176     0     0     1     0
## 901  0.52955281  0.377059546  0.48155851  0.23913583     0     0     1     0
## 902  0.90748179  1.252210864  0.94803048  0.69630482     0     0     1     0
## 903  0.52955281  0.074538103  0.23460275  0.05867438     0     0     0     1
## 904  0.67652519  1.630362668  0.57759685  0.28725888     0     0     0     1
## 905 -1.31809995 -1.286808392 -1.24713177 -1.18049419     0     1     0     1
## 906  0.46656465  0.042125091  0.01508653  0.28725888     0     0     0     1
## 907  0.56104690  0.193385812  0.46783874  0.33538193     0     0     0     1
## 908 -1.22361771  1.122558817  0.94803048  0.82864321     0     0     1     0

We have prepared our dataset for the K-Means clustering study by following a series of steps:

  1. Dataset Cleaning:
    • Missing values were either removed or imputed with the mean, considering that the number of missing attributes was low.
  2. Variable Normalization:
    • All numerical variables were normalized to ensure they contribute equally to the analysis.
  3. Creation of Dummy Variables:
    • Dummy variables were generated for categorical features, specifically for two categorical attributes.

With the cleaned and prepared dataset, we now proceed with the K-Means analysis.

To do this, we will conduct three tests using 2, 3, and 5 clusters.

This approach will allow us to evaluate how the data clusters under different scenarios and help determine the optimal number of clusters for our analysis.

set.seed(123)  
dos_grupos <- 2
kmeans2_result <- kmeans(hawks_scaled, centers = dos_grupos)
tres_grupos <- 3
kmeans3_result <- kmeans(hawks_scaled, centers = tres_grupos)
cinco_grupos <- 5
kmeans5_result <- kmeans(hawks_scaled, centers = cinco_grupos)

hawks_limpio2$Cluster2 <- as.factor(kmeans2_result$cluster)
hawks_limpio2$Cluster3 <- as.factor(kmeans3_result$cluster)
hawks_limpio2$Cluster5 <- as.factor(kmeans5_result$cluster)

Now, we will visualize the clusters and draw conclusions based on the results.

ggplot(hawks_limpio2, aes(x = Wing, y = Weight, color = Cluster2)) +
  geom_point() +
  labs(title = "K-Means Clustering (2 Groups)", 
       x = "Wing Size (mm)", 
       y = "Weight (g)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Wing, y = Culmen, color = Cluster2)) +
  geom_point() +
  labs(title = "K-Means Clustering (2 Groups)", 
       x = "Wing Size (mm)", 
       y = "Beak Size (mm)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Wing, y = Hallux, color = Cluster2)) +
  geom_point() +
  labs(title = "K-Means Clustering (2 Groups)", 
       x = "Wing Size (mm)", 
       y = "Spur Size (mm)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Cluster2, fill = Cluster2)) +
  geom_bar() +
  labs(title = "Cluster Distribution (2 Groups)", 
       x = "Cluster", 
       y = "Count") +
  theme_minimal()

Our 2-cluster option seems like a good choice, as the distribution appears well-defined, clearly showing two groups.

However, we will continue our analysis with 3 clusters to further evaluate the data.

ggplot(hawks_limpio2, aes(x = Wing, y = Weight, color = Cluster3)) +
  geom_point() +
  labs(title = "K-Means Clustering (3 Groups)", 
       x = "Wing Size (mm)", 
       y = "Weight (g)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Wing, y = Culmen, color = Cluster3)) +
  geom_point() +
  labs(title = "K-Means Clustering (3 Groups)", 
       x = "Wing Size (mm)", 
       y = "Beak Size (mm)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Wing, y = Hallux, color = Cluster3)) +
  geom_point() +
  labs(title = "K-Means Clustering (3 Groups)", 
       x = "Wing Size (mm)", 
       y = "Spur Size (mm)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Cluster3, fill = Cluster3)) +
  geom_bar() +
  labs(title = "Cluster Distribution (3 Groups)", 
       x = "Cluster", 
       y = "Count") +
  theme_minimal()

Comparing with the 2-cluster model, the 3-cluster approach seems to make more sense.

Additionally, considering that we have 3 species, this is likely the most logical reason to use 3 clusters.

However, as we are conducting multiple tests, we will continue to evaluate whether more clusters are a viable option.

Next, we test with 5 clusters to determine if further segmentation improves the analysis or if it becomes less meaningful.

ggplot(hawks_limpio2, aes(x = Wing, y = Weight, color = Cluster5)) +
  geom_point() +
  labs(title = "K-Means Clustering (5 Groups)", 
       x = "Wing Size (mm)", 
       y = "Weight (g)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Wing, y = Culmen, color = Cluster5)) +
  geom_point() +
  labs(title = "K-Means Clustering (5 Groups)", 
       x = "Wing Size (mm)", 
       y = "Beak Size (mm)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Wing, y = Hallux, color = Cluster5)) +
  geom_point() +
  labs(title = "K-Means Clustering (5 Groups)", 
       x = "Wing Size (mm)", 
       y = "Spur Size (mm)") +
  theme_minimal()

ggplot(hawks_limpio2, aes(x = Cluster5, fill = Cluster5)) +
  geom_bar() +
  labs(title = "Cluster Distribution (5 Groups)", 
       x = "Cluster", 
       y = "Count") +
  theme_minimal()

We clearly observe that 5 clusters is too many.

Although there is no exact definition of the optimal number of clusters to distinguish significant differences among the selected variables, we will apply several methods taught in the Multivariate Analysis course from previous semesters.

These methods include:
- Elbow Method
- Silhouette Method
- Gap Statistic

From our observations, the optimal number of clusters is between 2 and 3, but the best choice is 3, as we have three species.

dfnumeric <- hawks_limpio2 %>%
  select(Wing, Weight, Culmen, Hallux, Sex_M, Sex_F, Age_A, Age_I)

# Elbow Method
wss <- sapply(1:10, function(k) {
  kmeans(dfnumeric, k, nstart = 10)$tot.withinss
})

plot(1:10, wss, type = "b", pch = 19, frame = FALSE, 
     xlab = "Number of Clusters K", ylab = "Total Within-Cluster Sum of Squares")

# Silhouette Method
avg_sil <- sapply(2:10, function(k) {
  km <- kmeans(dfnumeric, centers = k, nstart = 10)
  ss <- silhouette(km$cluster, dist(dfnumeric))
  mean(ss[, 3])
})

plot(2:10, avg_sil, type = "b", pch = 19, frame = FALSE, 
     xlab = "Number of Clusters K", ylab = "Average Silhouette Width")

# Gap Statistic Method
gap_stat <- clusGap(dfnumeric, FUN = kmeans, nstart = 25, K.max = 10, B = 50)
## Warning: did not converge in 10 iterations
fviz_gap_stat(gap_stat)

Finally, we create a hierarchical clustering plot using the selected number of clusters: 3.

dj <- dist(dfnumeric)
cc <- hclust(dj, method = "complete")
plot(cc, main = "Hierarchical Clustering of Birds")
rect.hclust(cc, k = 3, border = "red")

## Final Conclusions

The measurements of wing length and beak size allow for clear species separation, whereas weight does not.

When analyzing the weight variable, we observe that observations overlap, making it less effective for clustering.

As noted in our initial exploratory analysis, we have more juvenile hawks compared to adults, which may be a key factor influencing the cluster distribution.

The number of species (3) serves as a key indicator for selecting 3 clusters.

However, much of our analysis also suggests that 2 clusters would not be an incorrect choice.

Final Verdict:

After thoroughly analyzing the data and obtaining strong results, we conclude that the lack of clear separation in the dataset implies that K-Means may not be the most suitable clustering method for this dataset.


Section 2: Study Using DBSCAN and OPTICS

Data Preparation

Before proceeding, we need to understand both clustering algorithms.

We found the following information:

OPTICS Algorithm - Wikipedia

  • The OPTICS algorithm (Ordering Points to Identify the Clustering Structure) is a density-based clustering method.
  • It is similar to DBSCAN but more flexible.
  • OPTICS orders data points so that closer points are grouped first.
  • It uses two parameters:
    • ε (maximum radius)
    • MinPts (minimum number of points to form a cluster)
  • Each point receives a reachability distance, representing the density required to form a cluster.
  • OPTICS is particularly useful for detecting clusters in datasets with varying densities.

We chose MinPts = 10, based on the example exercise and the following reference:

How to Determine Epsilon and MinPts for DBSCAN

  • In practice and literature, a MinPts value between 5 and 10 is commonly used.
  • This range balances sensitivity to clusters and resistance to outliers.
  • A MinPts of 10 provides enough flexibility to adapt to data variability.

We will use the normalized dataset, excluding dummy variables.

After the initial analysis, we will assess whether repeating the experiment with dummy variables is necessary.

hawks_scaled2 <- hawks_scaled %>%
  select(Wing, Weight, Culmen, Hallux)
hawks_scaled2
##            Wing       Weight      Culmen      Hallux
## 1    0.72901533  0.323037860  0.53643756  0.58802795
## 2    0.63453308  0.344646534  0.68899769  0.84440031
## 3    0.68702322  0.474298581  0.67363520  0.73239710
## 4   -0.53074792 -0.649352494 -0.42394592 -0.20600240
## 5   -1.16062955 -1.297612730 -1.27457130 -1.31283258
## 6    1.01246206  0.690385326  0.92059096  0.84067397
## 7    0.57154492  0.409472558  0.48155851  0.58802795
## 8    0.62403506  0.182581475  0.74223402  0.57599719
## 9    1.01246206  0.949689421  1.03034907  0.73239710
## 10   0.93897587  0.755211350  0.57759685  0.60005871
## 11   0.81299955  0.517515930  0.61875615  0.67224329
## 12   0.58204295  0.517515930  0.49527827  0.53990490
## 13   0.78150546  0.755211350  0.97547001  0.68427405
## 14   0.81299955  0.844699836  0.87943166  0.64818176
## 15   1.05445417  0.863254723  0.64619568  1.05722770
## 16   1.26441471  1.338645562  1.19498624  1.05722770
## 17   1.07545022  0.820037374  0.72851426  0.69630482
## 18   0.68702322  0.387863883  0.97547001  0.44365880
## 19   0.65552914  0.301429185  0.53643756  0.35944346
## 20   0.84449363  0.517515930  0.30320157  0.20304354
## 21   0.87598771  0.647167977  0.63247591  0.72036634
## 22   1.05445417  0.906472072  0.96175025  0.76848939
## 23   1.04395614 -1.446712584  0.42667945  0.66021253
## 24   0.80250152  1.208993515  0.71479450  0.61208948
## 25   0.67652519  0.474298581  0.57759685  0.57599719
## 26  -1.49656641 -1.448873451 -1.42396428 -1.31993010
## 27   0.87598771  0.711994001  0.60503638  0.87676626
## 28   0.89698376  0.906472072  0.93431072  0.76848939
## 29  -1.16062955 -1.276004055 -1.38432941 -1.22861724
## 30   1.16993247  1.554732307  1.14010718  0.86473550
## 31   0.83399560  0.582341954  0.72851426  0.74442787
## 32   0.48756071  0.106951114  0.42667945  0.32335117
## 33   0.84449363  0.560733279  0.57759685  0.53990490
## 34   0.79200349  1.144167491  0.50899803  0.86473550
## 35   1.02296009  1.576340982  0.64619568  0.73239710
## 36   0.58204295  0.668776652  0.48155851  0.23913583
## 37   0.72901533  1.187384840  0.75595379  0.58802795
## 38   0.65552914  1.554732307  0.49527827  0.73239710
## 39   1.05445417  1.576340982  1.00290954  0.67224329
## 40  -1.28660587 -1.448873451 -1.71360375 -1.31993010
## 41  -1.51756247 -1.474803861 -1.65872469 -1.64969394
## 42  -0.86668479 -0.964839142 -0.79437955 -0.71129444
## 43   0.71851730  0.625559303  0.59131662  0.72036634
## 44   0.69752125  0.798428699  0.45411898  0.50381261
## 45   0.78150546  0.560733279  0.79711308  0.61208948
## 46   0.78150546  0.495907256  0.45411898  0.37147422
## 47   0.81299955  0.603950628  0.94803048  0.55193566
## 48   0.65552914  0.582341954  0.60503638  0.72036634
## 49   0.86548968  0.733602675  0.64619568  0.68427405
## 50   1.01246206  1.144167491  0.83827237  0.76247401
## 51   0.88648573  0.452689907  0.53643756  0.49178185
## 52   1.11744233  0.755211350  0.63247591  0.37147422
## 53  -1.19212363 -1.375403958 -1.28829106 -1.38501716
## 54   0.82349757  1.079341468  0.82455261  0.76848939
## 55   0.56104690  0.236603161  0.44039921  0.15492049
## 56  -0.66722227 -0.930265263 -0.79437955 -0.53083300
## 57  -0.79319860 -0.930265263 -0.78065979 -0.71129444
## 58   0.99146601  1.046928456  1.08522813  0.74442787
## 59  -0.78270057  1.187384840  0.93431072  1.34596601
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## 608  0.81299955  0.625559303  0.81083284  0.86473550
## 609  0.77100744  0.787624362  0.72851426  0.82864321
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## 816  0.81299955  0.830841711  0.89315143  0.68427405
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## 823  0.71851730  0.517515930  0.68735497  0.70833558
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## 846  0.62403506  0.333842197  0.49527827  0.40756651
## 847  0.86548968  0.938885083  0.79711308  0.98504313
## 848  0.72901533  0.582341954  0.74223402  0.75645863
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## 856  0.88648573  1.111754480  1.08522813  0.99707389
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## 858  0.57154492  0.128559789  0.24832252  0.31132040
## 859 -1.63304077 -1.459677789 -1.59012587 -1.68578623
## 860  0.91797982  1.252210864  0.85199214  0.91285855
## 861  0.62403506  0.517515930  0.44039921  0.67224329
## 862  0.60303900  0.409472558  0.81083284  0.87676626
## 863  0.72901533  1.295428213  0.63247591  0.47975108
## 864 -1.81150723 -1.297612730 -1.23341200 -1.36095563
## 865 -1.61204471 -1.448873451 -1.79592233 -1.66172471
## 866  0.80250152  1.036124119  0.93431072  0.92488931
## 867  0.59254098  0.312233522  0.39923992  0.35944346
## 868  0.62403506  0.171777138  0.44039921  0.33538193
## 869  1.04395614  1.111754480  1.04406883  1.05722770
## 870 -1.62254274 -1.459677789 -1.64500493 -1.62563242
## 871  0.67652519  0.506711593  0.71479450  0.76848939
## 872  1.00196403  0.971298095  0.86571190  0.90082778
## 873 -1.62254274 -1.459677789 -1.67244445 -1.54141708
## 874 -1.58055063 -1.448873451 -1.64500493 -1.58954013
## 875  0.81299955  1.068537131  0.89315143  0.90082778
## 876  0.57154492  0.539124605  0.38552016  0.57599719
## 877 -0.89817887 -0.887047914 -0.79437955 -0.37443308
## 878  0.51905479  0.269016173  0.37180039  0.44365880
## 879  0.58204295  0.841646048  0.53643756  0.38350498
## 880  0.88648573  1.760014715  0.98918978  1.03316618
## 881  0.69752125  0.798428699  0.42667945  0.76848939
## 882  0.58204295  0.744407013  0.48155851  0.47975108
## 883  0.57154492  0.809233036  0.49527827  0.60005871
## 884 -1.27610784 -1.265199718 -1.23341200 -1.25267877
## 885  0.33009030  0.474298581  0.48155851  0.55193566
## 886  0.49805873  0.377059546  0.37180039  0.84440031
## 887 -1.26560982 -1.308417067 -1.38432941 -1.28877106
## 888  0.80250152  0.560733279  0.61875615  0.34741269
## 889 -1.00315914 -0.973482612 -0.86297837 -0.68723291
## 890 -1.28660587 -1.438069114 -1.20597248 -1.15643267
## 891  0.51905479  0.474298581  0.63247591  0.57599719
## 892  0.75001138  0.636363640  0.85199214  0.90082778
## 893  0.88648573  0.603950628  0.59131662  0.53990490
## 894  0.48756071  0.150168463  0.19344346  0.10679744
## 895 -1.23411574 -1.254395381 -1.31573059 -1.13237114
## 896 -1.31809995 -1.232786706 -1.24713177 -1.22861724
## 897 -1.24461376 -1.265199718 -1.23341200 -1.15643267
## 898  0.57154492  0.495907256  0.70107473  0.74442787
## 899 -1.21311968 -1.265199718 -1.23341200 -1.20455572
## 900  0.46656465  1.198189178  0.60503638  0.64818176
## 901  0.52955281  0.377059546  0.48155851  0.23913583
## 902  0.90748179  1.252210864  0.94803048  0.69630482
## 903  0.52955281  0.074538103  0.23460275  0.05867438
## 904  0.67652519  1.630362668  0.57759685  0.28725888
## 905 -1.31809995 -1.286808392 -1.24713177 -1.18049419
## 906  0.46656465  0.042125091  0.01508653  0.28725888
## 907  0.56104690  0.193385812  0.46783874  0.33538193
## 908 -1.22361771  1.122558817  0.94803048  0.82864321

OPTICS

res <- optics(hawks_scaled2, minPts = 10)
res
## OPTICS ordering/clustering for 908 objects.
## Parameters: minPts = 10, eps = 3.07488223798005, eps_cl = NA, xi = NA
## Available fields: order, reachdist, coredist, predecessor, minPts, eps,
##                   eps_cl, xi

The data indicates that 3.07488223798005 is the maximum neighborhood size to consider when determining proximity between data points.

res$order
##   [1]   1 571 390 267 260 245 620 185 184 150 149 137  93 824 764 650 408 233
##  [19] 193  25 236 487 481 426 378 317 787 771 594 467 281  12  87 134 119 278
##  [37] 203 765 334 861 844 701 471 223 283 116 648 891 832 707 681 547 508 337
##  [55] 762 579 139 251  80   7 165 555 365 532 131  11 402 784 295 364 206 515
##  [73] 457 876 561 550 391  33 222 774 717 552 292 403 372 250 823 506 460 179
##  [91] 154  48  43 758 589 871 848 671 450  79 898 760 473   3 113 715 423 483
## [109] 438 427 270 647 135  90  31 696 782 740 590 182 323 190 157 342 800 465
## [127] 338 180 178 679 181 354 556 778 726 528 437 526  45 355 743 649 582 336
## [145] 155 544 855 309 615 854 893 169 274 585 240 110  21 572 433 183 692 862
## [163]   2  51 286 789 733 324 719 846 560 505 478 867 878 576 466 434 380 230
## [181]  19 853 489 504 114 194 617 136 138  71 709 258 770 290 205 237 596 780
## [199] 775 602 600 601 581 397 745 117 907 868 674 676 537  32 553 412 177 173
## [217]  49 200 672 606 593 151 559 605 881 769 496 531 888 197 159 123 385 883
## [235] 882 614 540 901 744 558 369 497 209 208 204 455 694 275 609 514 367 608
## [253] 892 812 631 566 501 405 300 785 199  47 224  72 691 207  10 294  46 153
## [271] 118 430 147  55  27 163 241 816 591 444 377 124 551 485 428 384 351  28
## [289]  14 798 847 658 872 548 289 254 186 174 120  91 777 262 246  82 229  66
## [307]  54  50 335 732 529 522 226 421 875 866 833 817 705 632 517 269 641 752
## [325] 388 492 804 573 225 716 502 389 564 541 350  13 441 869 856 759 728 683
## [343] 578 252  95  60 567 480 164 291 293 597 127  81  73 126 409 718 482 257
## [361]  22   9  97 536 271 860 669 468 187 616  92 792 827 723 463 217 158 344
## [379] 238 768 446 145 472   8 543 220 885 462 115 106 280 666 525 786 102 256
## [397] 586   6 435 592 452  89 499 387 264 773  44  58 886 261 189 470 704 247
## [415]  63 845 538 879 273 731 392 534 469 298 440  18 105 607 242  96 598 790
## [433] 303  17 750 133 192  75 494 366 682 902 418 140 652 339 382 146  77 613
## [451] 109 407 510  94 706 235 843 838 265 664 401 610 651 858 259 406 491 539
## [469] 248 512  34 894 410 793  24 767 584  37  76  36 507 285  15 332 474 484
## [487] 297 373 665 376 863 156  20 333 436 721  70 255 629  16 343 396 232 900
## [505]  39  52 399 348 903 549 498  30 331 797 612 906  62 695  35 272 244  78
## [523] 346 880 175 554 162 282 381 296 479 766 148 714  38 456  64 210 345 667
## [541] 700 411 322 795 166  88 904 359 356 349 347 191 132  74 811 796 622 476
## [559] 243 414 603 398 326 362 908  59 699 445 819 809 788 686 680 673 459 400
## [577] 310   4 588 353 239 108  67 415 702 577 542 249 530 711 111 234 634 839
## [595] 877 842 851 889 850 830 826 772 643 424 371  57  42 708 533 599 821 808
## [613] 524 757 443 299 221 393 288  56  86 188 642 742 442 327 263 287 662 735
## [631] 841 685 899 897 884 896 763 836 807 794 779 738 727 725 697 887 688 639
## [649] 623 416 316 284 219 621 104 840 746 475 313 595 523 500 630 214 822 730
## [667] 619 776 751 687 370 170 803 828 799 202 801 749 722 516 783 458 374  69
## [685]  84  29 276 301 228 461 171   5 624 176 160 905 448 375 172 644 802 306
## [703] 734 684 660 625 519 439 835 447 404 143  83 895 747 486 454 431 689 557
## [721] 312 857 395 488 413 340  98 513 477 464 167 129 611 198 218 675 546 814
## [739] 168  99 693 518 227 568 195 201 161 420 653 569 383 677  53 781 216 825
## [757]  26 103 211 277 352 890 820 215 360 315 618 357  40 341 253 329 545 837
## [775] 739 724 874 791 663 580 570 562 852 657 587 451 495 737 575 565 308 646
## [793] 659 655 654 626 503 859 831 761 736 712 527 422 849 805 748 636 520 307
## [811] 304 656 314 311 627 449 535 429 419 870 834 638 417 125 810 729 628 302
## [829] 633 829 386 268 815 690 101 670 394  41 604 806 368 755 196 756 144  85
## [847] 668 379 432 574 710  68 637 493 873 509 142 753 100 212 122 112 813 563
## [865] 698 661 865 713 130  65 231 141 818 107 363 121 213 864 320 635 425 583
## [883] 319 128 305 328 152 318 640 754 321 521 325 511 358 678 330 703 645 490
## [901]  23 453 266 361 279 720 741  61

The OPTICS point ordering arranges data based on density, revealing the cluster structure.

To better visualize the valleys, we will plot the reachability plot, making it clearer to determine the optimal number of clusters.

We observe two large valleys (first indication, similar to K-Means) and three smaller ones, with one being more prominent, leading to a preliminary conclusion of 3 clusters.

If we consider all valleys, we might identify 5 clusters.

plot(res, main= "Diagram reachability plot")

Now, we will visualize the clusters using the variables from our normalized dataset.

hawks_plot <- data.frame(
  Wing = hawks_scaled2$Wing,
  Weight = hawks_scaled2$Weight,
  Culmen = hawks_scaled2$Culmen,
  Hallux = hawks_scaled2$Hallux,
  Order = res$order
)

ggplot(hawks_plot, aes(x = Wing, y = Weight)) +
  geom_point(color = "grey") +
  geom_polygon(aes(x = Wing[Order], y = Weight[Order]), fill = NA, color = "blue") +
  ggtitle("Wing-Weight Traces") +
  xlab("Wing Size") +
  ylab("Weight") +
  theme_minimal()

ggplot(hawks_plot, aes(x = Wing, y = Culmen)) +
  geom_point(color = "grey") +
  geom_polygon(aes(x = Wing[Order], y = Culmen[Order]), fill = NA, color = "green") +
  ggtitle("Wing-Beak Traces") +
  xlab("Wing Size") +
  ylab("Beak Size") +
  theme_minimal()

ggplot(hawks_plot, aes(x = Wing, y = Hallux)) +
  geom_point(color = "grey") +
  geom_polygon(aes(x = Wing[Order], y = Hallux[Order]), fill = NA, color = "red") +
  ggtitle("Wing-Spur Traces") +
  xlab("Wing Size") +
  ylab("Spur Size") +
  theme_minimal()

ggplot(hawks_plot, aes(x = Weight, y = Culmen)) +
  geom_point(color = "grey") +
  geom_polygon(aes(x = Weight[Order], y = Culmen[Order]), fill = NA, color = "purple") +
  ggtitle("Weight-Beak Traces") +
  xlab("Weight") +
  ylab("Beak Size") +
  theme_minimal()

ggplot(hawks_plot, aes(x = Weight, y = Hallux)) +
  geom_point(color = "grey") +
  geom_polygon(aes(x = Weight[Order], y = Hallux[Order]), fill = NA, color = "orange") +
  ggtitle("Weight-Spur Traces") +
  xlab("Weight") +
  ylab("Spur Size") +
  theme_minimal()

ggplot(hawks_plot, aes(x = Culmen, y = Hallux)) +
  geom_point(color = "grey") +
  geom_polygon(aes(x = Culmen[Order], y = Hallux[Order]), fill = NA, color = "pink") +
  ggtitle("Beak-Spur Traces") +
  xlab("Beak Size") +
  ylab("Spur Size") +
  theme_minimal()

This type of chart is complex to interpret, so we created another one where we grouped everything to observe clearer patterns.

hawks_long <- hawks_plot %>%
  pivot_longer(cols = c(Wing, Weight, Culmen, Hallux), names_to = "variable", values_to = "value")

ggplot(hawks_long, aes(x = Order, y = value, color = variable)) +
  geom_point() +
  geom_line(aes(group = variable)) +
  facet_wrap(~ variable, scales = "free_y") +
  ggtitle("Variables by Density Order (OPTICS)") +
  theme_minimal()

Wing vs. Weight Relationship
We can see clear groupings in the Wing vs. Weight plots. This suggests that wing size and weight are characteristics that may help distinguish between hawk species. For example, larger and heavier hawks might belong to a specific species, while smaller and lighter ones may belong to another.

Wing vs. Culmen Relationship
The Wing vs. Culmen plot also shows groupings, indicating that wing size and beak size are correlated. This can be particularly useful for identifying species with specific beak and wing characteristics, such as cooperative hawks.

Wing vs. Hallux Relationship
Although less obvious, the Wing vs. Hallux plot still shows some grouping patterns. The length of the spur, along with wing size, may differentiate certain species or ages within the same species.

Weight vs. Culmen and Weight vs. Hallux Relationships
These plots show less clear differentiation, suggesting that weight is not as strong of an independent predictor for beak and spur characteristics. However, when combined with other variables, it can still provide valuable insights.

Species and Clusters
Finally, by including these measurements in the clustering analysis, we can infer that there are three main clusters corresponding to the three hawk species. The grouping observed in the plots confirms that physical characteristics have a significant impact on species classification.

DBSCAN

Now, let’s move on to the second algorithm, DBSCAN.
We are not sure what epsilon value to use, so we referred to this reference: How to find optimal epsilon value

Looking at the k-distance graph (we used 9 as indicated by minPts - 1 = k), we can see that the curve remains relatively flat for most of the points but starts to increase sharply towards the end. The point where the slope of the graph changes sharply is between 0.4 and 0.7 on the axis. This suggests that the mean should be around 0.55.

k <- 9
kNNdistplot(hawks_scaled2, k = k)

The clusters contain 559, 60, and 258 points respectively, highlighting the structure of the data in specific densities and confirming the effectiveness of this epsilon value.

res <- extractDBSCAN(res, eps_cl = 0.55)
res
## OPTICS ordering/clustering for 908 objects.
## Parameters: minPts = 10, eps = 3.07488223798005, eps_cl = 0.55, xi = NA
## The clustering contains 3 cluster(s) and 31 noise points.
## 
##   0   1   2   3 
##  31 559  60 258 
## 
## Available fields: order, reachdist, coredist, predecessor, minPts, eps,
##                   eps_cl, xi, cluster

We plotted the data and can clearly see the 3 clusters and the corresponding noise.

plot(res)

We also plotted it additionally, where it is even clearer.

hullplot(hawks_scaled2, res)

We will perform the same process but including our dummy variables for sex and age.

hawks_scaled
##            Wing       Weight      Culmen      Hallux Sex_M Sex_F Age_A Age_I
## 1    0.72901533  0.323037860  0.53643756  0.58802795     0     0     0     1
## 2    0.63453308  0.344646534  0.68899769  0.84440031     0     0     0     1
## 3    0.68702322  0.474298581  0.67363520  0.73239710     0     0     0     1
## 4   -0.53074792 -0.649352494 -0.42394592 -0.20600240     0     1     0     1
## 5   -1.16062955 -1.297612730 -1.27457130 -1.31283258     0     1     0     1
## 6    1.01246206  0.690385326  0.92059096  0.84067397     0     0     0     1
## 7    0.57154492  0.409472558  0.48155851  0.58802795     0     0     0     1
## 8    0.62403506  0.182581475  0.74223402  0.57599719     0     0     1     0
## 9    1.01246206  0.949689421  1.03034907  0.73239710     0     0     1     0
## 10   0.93897587  0.755211350  0.57759685  0.60005871     0     0     0     1
## 11   0.81299955  0.517515930  0.61875615  0.67224329     0     0     0     1
## 12   0.58204295  0.517515930  0.49527827  0.53990490     0     0     0     1
## 13   0.78150546  0.755211350  0.97547001  0.68427405     0     0     1     0
## 14   0.81299955  0.844699836  0.87943166  0.64818176     0     0     1     0
## 15   1.05445417  0.863254723  0.64619568  1.05722770     0     0     0     1
## 16   1.26441471  1.338645562  1.19498624  1.05722770     0     0     1     0
## 17   1.07545022  0.820037374  0.72851426  0.69630482     0     0     0     1
## 18   0.68702322  0.387863883  0.97547001  0.44365880     0     0     1     0
## 19   0.65552914  0.301429185  0.53643756  0.35944346     0     0     0     1
## 20   0.84449363  0.517515930  0.30320157  0.20304354     0     0     0     1
## 21   0.87598771  0.647167977  0.63247591  0.72036634     0     0     0     1
## 22   1.05445417  0.906472072  0.96175025  0.76848939     0     0     0     1
## 23   1.04395614 -1.446712584  0.42667945  0.66021253     0     0     0     1
## 24   0.80250152  1.208993515  0.71479450  0.61208948     0     0     1     0
## 25   0.67652519  0.474298581  0.57759685  0.57599719     0     0     0     1
## 26  -1.49656641 -1.448873451 -1.42396428 -1.31993010     1     0     0     1
## 27   0.87598771  0.711994001  0.60503638  0.87676626     0     0     0     1
## 28   0.89698376  0.906472072  0.93431072  0.76848939     0     0     1     0
## 29  -1.16062955 -1.276004055 -1.38432941 -1.22861724     0     1     0     1
## 30   1.16993247  1.554732307  1.14010718  0.86473550     0     0     0     1
## 31   0.83399560  0.582341954  0.72851426  0.74442787     0     0     1     0
## 32   0.48756071  0.106951114  0.42667945  0.32335117     0     0     0     1
## 33   0.84449363  0.560733279  0.57759685  0.53990490     0     0     1     0
## 34   0.79200349  1.144167491  0.50899803  0.86473550     0     0     1     0
## 35   1.02296009  1.576340982  0.64619568  0.73239710     0     0     1     0
## 36   0.58204295  0.668776652  0.48155851  0.23913583     0     0     1     0
## 37   0.72901533  1.187384840  0.75595379  0.58802795     0     0     1     0
## 38   0.65552914  1.554732307  0.49527827  0.73239710     0     0     1     0
## 39   1.05445417  1.576340982  1.00290954  0.67224329     0     0     1     0
## 40  -1.28660587 -1.448873451 -1.71360375 -1.31993010     1     0     0     1
## 41  -1.51756247 -1.474803861 -1.65872469 -1.64969394     1     0     0     1
## 42  -0.86668479 -0.964839142 -0.79437955 -0.71129444     0     0     0     1
## 43   0.71851730  0.625559303  0.59131662  0.72036634     0     0     0     1
## 44   0.69752125  0.798428699  0.45411898  0.50381261     0     0     0     1
## 45   0.78150546  0.560733279  0.79711308  0.61208948     0     0     0     1
## 46   0.78150546  0.495907256  0.45411898  0.37147422     0     0     0     1
## 47   0.81299955  0.603950628  0.94803048  0.55193566     0     0     0     1
## 48   0.65552914  0.582341954  0.60503638  0.72036634     0     0     0     1
## 49   0.86548968  0.733602675  0.64619568  0.68427405     0     0     0     1
## 50   1.01246206  1.144167491  0.83827237  0.76247401     0     0     0     1
## 51   0.88648573  0.452689907  0.53643756  0.49178185     0     0     0     1
## 52   1.11744233  0.755211350  0.63247591  0.37147422     0     0     0     1
## 53  -1.19212363 -1.375403958 -1.28829106 -1.38501716     0     1     0     1
## 54   0.82349757  1.079341468  0.82455261  0.76848939     0     0     0     1
## 55   0.56104690  0.236603161  0.44039921  0.15492049     0     0     0     1
## 56  -0.66722227 -0.930265263 -0.79437955 -0.53083300     0     1     0     1
## 57  -0.79319860 -0.930265263 -0.78065979 -0.71129444     1     0     1     0
## 58   0.99146601  1.046928456  1.08522813  0.74442787     0     0     0     1
## 59  -0.78270057  1.187384840  0.93431072  1.34596601     0     0     0     1
## 60   0.97046995  1.187384840  1.12638742  0.98504313     0     0     0     1
## 61  -2.92219849  0.884863397 -0.21814946  0.17296663     0     0     0     1
## 62   0.67652519 -0.022700933  0.37180039  0.10679744     0     0     0     1
## 63   0.84449363  1.036124119  0.65991544  0.87676626     0     0     0     1
## 64   0.10963173  0.661124977  0.46783874  0.29928964     0     0     0     1
## 65  -1.65403682 -1.448873451 -1.50780728 -1.77000157     1     0     0     1
## 66   1.05445417  1.144167491  0.75595379  0.90082778     0     0     0     1
## 67  -0.46775976 -0.638548157 -0.49254474 -0.05561786     0     1     0     1
## 68  -1.46507233 -1.448873451 -1.64500493 -1.69781700     1     0     1     0
## 69  -1.27610784 -1.340003865 -1.42548870 -1.32486335     0     1     1     0
## 70   0.78150546  0.668776652  1.15382695  0.46772032     0     0     1     0
## 71   0.79200349  0.776820025  0.63247591  0.50381261     0     0     1     0
## 72   0.75001138  0.841646048  0.68735497  0.69630482     0     0     1     0
## 73   1.09644628  1.241406527  1.05778860  1.09331999     0     0     0     1
## 74   1.25391668  1.327841225  1.48310128  0.64818176     0     0     1     0
## 75   0.88648573  0.949689421  0.50899803  0.40756651     0     0     1     0
## 76   0.86548968  1.479101947  0.85199214  0.75645863     0     0     0     1
## 77   0.83399560  0.884863397  0.44039921  0.44365880     0     0     0     1
## 78   0.99146601  1.576340982  0.72851426  0.96098160     0     0     0     1
## 79   0.56104690  0.549928942  0.72851426  0.75645863     0     0     0     1
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## 712 -1.63304077 -1.470482126 -1.57640611 -1.64969394     1     0     0     1
## 713 -1.57005260 -1.438069114 -1.43920846 -1.66172471     1     0     0     1
## 714  0.48756071  1.154971829  0.87943166  1.09331999     0     0     0     1
## 715  0.62403506  0.441885569  0.74223402  0.79255092     0     0     0     1
## 716  0.76050941  0.895667734  0.97547001  1.09331999     0     0     0     1
## 717  0.80250152  0.560733279  0.59131662  0.63615100     0     0     0     1
## 718  1.01246206  0.960493758  0.94803048  1.06925847     0     0     0     1
## 719  0.58204295  0.657972315  0.70107473  0.91285855     0     0     0     1
## 720 -0.63572819  0.409472558 -0.28674828  2.11593483     0     1     1     0
## 721  0.79200349  0.052929428  0.34436087  0.28725888     0     0     0     1
## 722 -1.31809995 -1.276004055 -1.31573059 -1.32486335     0     1     0     1
## 723  0.72901533  0.982102432  0.82455261  0.81661244     0     0     0     1
## 724 -1.57005260 -1.427264777 -1.61756540 -1.60157089     1     0     0     1
## 725 -1.24461376 -1.308417067 -1.31573059 -1.24064801     0     1     1     0
## 726  0.57154492  0.323037860  0.61875615  0.81661244     0     0     0     1
## 727 -1.31809995 -1.297612730 -1.34317012 -1.22861724     0     1     0     1
## 728  0.88648573  1.176580503  1.07150836  1.05722770     0     0     0     1
## 729 -1.61204471 -1.448873451 -1.69988398 -1.69781700     1     0     0     1
## 730 -1.27610784 -1.330025742 -1.27457130 -1.28877106     0     1     0     1
## 731  0.83399560  0.830841711  1.11266765  1.10535075     0     0     0     1
## 732  0.91797982  0.841646048  0.98918978  0.85270473     0     0     0     1
## 733  0.73951336  0.398668220  0.83827237  0.62412024     0     0     0     1
## 734 -1.28660587 -1.254395381 -1.19225271 -1.24064801     0     1     1     0
## 735 -1.18162560 -1.276004055 -1.09621436 -1.26470953     0     1     1     0
## 736 -1.64353879 -1.470482126 -1.61756540 -1.64969394     1     0     1     0
## 737 -1.60154668 -1.448873451 -1.64500493 -1.62563242     1     0     0     1
## 738 -1.30760193 -1.254395381 -1.28829106 -1.25267877     1     0     1     0
## 739 -1.57005260 -1.438069114 -1.57640611 -1.58954013     1     0     0     1
## 740  0.47706268  0.560733279  0.71479450  0.63615100     0     0     0     1
## 741 -0.58323806 -0.444070086 -0.28674828  3.52353409     0     1     1     0
## 742 -0.85618676 -0.843830565 -1.28829106 -0.39849461     1     0     1     0
## 743  0.64503111  0.582341954  0.86571190  0.68427405     0     0     0     1
## 744  0.47706268  0.301429185  0.34436087  0.27522812     0     0     0     1
## 745  0.62403506  0.506711593  0.57759685  0.87676626     0     0     0     1
## 746 -1.28660587 -1.276004055 -1.35688988 -1.31283258     0     1     0     1
## 747 -1.25511179 -1.286808392 -1.28829106 -1.15643267     0     1     0     1
## 748 -1.64353879 -1.438069114 -1.64500493 -1.70984776     1     0     0     1
## 749 -1.29710390 -1.254395381 -1.37060964 -1.32486335     0     1     0     1
## 750  0.89698376  1.036124119  0.87943166  1.21362762     0     0     0     1
## 751 -1.23411574 -1.265199718 -1.26085153 -1.20455572     0     1     0     1
## 752  0.95997192  1.090145805  0.78339332  1.02113541     0     0     0     1
## 753 -1.61204471 -1.438069114 -1.64500493 -1.52938631     1     0     0     1
## 754 -1.53855852 -0.282005027 -0.69834120 -0.19397164     0     1     1     0
## 755 -1.54905655 -1.448873451 -1.54896658 -1.74594005     1     0     0     1
## 756 -1.54905655 -1.438069114 -1.52152705 -1.63766318     1     0     1     0
## 757 -0.97166506 -0.822221890 -0.80809932 -0.55489452     1     0     1     0
## 758  0.62403506  0.560733279  0.70107473  0.73239710     0     0     0     1
## 759  0.94947390  1.122558817  1.03034907  0.97301236     0     0     1     0
## 760  0.73951336  0.539124605  0.70107473  0.76848939     0     0     0     1
## 761 -1.63304077 -1.438069114 -1.63128516 -1.66172471     1     0     1     0
## 762  0.65552914  0.614754966  0.64619568  0.56396642     0     0     0     1
## 763 -1.28660587 -1.265199718 -1.30201082 -1.25267877     0     1     1     0
## 764  0.66602717  0.517515930  0.44039921  0.49178185     0     0     0     1
## 765  0.50855676  0.528320267  0.42667945  0.51584337     0     0     0     1
## 766  0.36158438  0.744407013  1.05778860  0.61208948     0     0     1     0
## 767  0.67652519  1.187384840  0.67363520  0.76848939     0     0     0     1
## 768  0.83399560  0.884863397  1.16754671  0.98504313     0     0     1     0
## 769  0.59254098  0.809233036  0.56387709  0.84067397     0     0     0     1
## 770  0.63453308  0.485102918  0.85199214  0.60005871     0     0     0     1
## 771  0.54005084  0.593146291  0.59131662  0.63615100     0     0     0     1
## 772 -0.89817887 -0.930265263 -0.79437955 -0.68723291     1     0     0     1
## 773  0.52955281  0.355450871  0.53643756  0.22710506     0     0     0     1
## 774  0.73951336  0.636363640  0.59131662  0.69630482     0     0     0     1
## 775  0.62403506  0.733602675  0.81083284  0.73239710     0     0     0     1
## 776 -1.22361771 -1.254395381 -1.34317012 -1.20455572     0     1     0     1
## 777  0.93897587  1.046928456  0.83827237  0.79255092     0     0     1     0
## 778  0.58204295  0.528320267  0.42667945  0.38350498     0     0     1     0
## 779 -1.28660587 -1.254395381 -1.31573059 -1.20455572     0     1     0     1
## 780  0.36158438  0.409472558  0.65991544  0.56396642     0     0     0     1
## 781 -1.28660587 -1.232786706 -1.43920846 -1.40907869     0     1     0     1
## 782  0.55054887  0.690385326  0.75595379  0.62412024     0     0     1     0
## 783 -1.37059009 -1.297612730 -1.34317012 -1.26470953     1     0     0     1
## 784  0.59254098  0.679580989  0.49527827  0.55193566     0     0     0     1
## 785  0.84449363  0.636363640  0.81083284  0.57599719     0     0     0     1
## 786  0.51905479  0.766015687  0.70107473  0.49178185     0     0     0     1
## 787  0.61353703  0.603950628  0.50899803  0.61208948     0     0     0     1
## 788 -0.65672425 -0.530504784 -0.31418781 -0.20600240     0     1     0     1
## 789  0.59254098  0.452689907  0.63247591  0.45568956     0     0     0     1
## 790  0.63453308  0.884863397  0.35808063  0.66021253     0     0     0     1
## 791 -1.57005260 -1.416460440 -1.63128516 -1.63766318     1     0     0     1
## 792  0.56104690  0.701189664  0.65991544  0.38350498     0     0     0     1
## 793  0.79200349  1.208993515  0.68735497  0.58802795     0     0     1     0
## 794 -1.28660587 -1.265199718 -1.32945035 -1.24064801     0     1     0     1
## 795  0.85499165  0.711994001  0.04252606  0.43162803     0     0     1     0
## 796  0.52955281  0.744407013  0.72851426 -0.50677147     0     0     0     1
## 797  0.72901533  1.360254237  1.16754671  0.97301236     0     0     1     0
## 798  0.88648573  0.874059060  0.79711308  0.88879702     0     0     0     1
## 799 -1.23411574 -1.265199718 -1.37060964 -1.21658648     0     1     0     1
## 800  0.51905479  0.431081232  0.56387709  0.76848939     0     0     1     0
## 801 -1.27610784 -1.297612730 -1.39804917 -1.34892487     0     1     0     1
## 802 -1.26560982 -1.286808392 -1.34317012 -1.15643267     0     1     0     1
## 803 -1.21311968 -1.308417067 -1.41176894 -1.28877106     0     1     0     1
## 804  0.71851730  1.057732793  0.93431072  0.87676626     0     0     0     1
## 805 -1.64353879 -1.427264777 -1.63128516 -1.69781700     1     0     0     1
## 806 -1.62254274 -1.448873451 -1.71360375 -1.64969394     1     0     0     1
## 807 -1.30760193 -1.254395381 -1.30201082 -1.25267877     0     1     0     1
## 808 -1.04515125 -1.005895624 -0.79437955 -0.57895605     1     0     0     1
## 809 -0.62523017 -0.562917796 -0.41022616 -0.23006392     0     1     0     1
## 810 -1.62254274 -1.470482126 -1.68616422 -1.67375547     1     0     0     1
## 811  0.84449363  0.917276409  0.71479450 -0.16991011     0     0     1     0
## 812  0.79200349  0.571537617  0.83827237  0.94895084     0     0     0     1
## 813 -1.63304077 -1.470482126 -1.78220257 -1.66172471     1     0     0     1
## 814 -1.39158614 -1.319221404 -1.24713177 -1.27674029     1     0     0     1
## 815 -1.67503287 -1.481286463 -1.65872469 -1.70984776     1     0     0     1
## 816  0.81299955  0.830841711  0.89315143  0.68427405     0     0     0     1
## 817  0.85499165  1.057732793  0.82455261  0.92488931     0     0     0     1
## 818 -1.64353879 -1.459677789 -1.76848280 -1.78203234     1     0     0     1
## 819 -0.63572819 -0.714178518 -0.43766569 -0.29021774     0     1     0     1
## 820 -1.24461376 -1.286808392 -1.61756540 -1.24064801     1     0     0     1
## 821 -1.02415519 -1.027504298 -0.78065979 -0.69926368     1     0     0     1
## 822 -1.25511179 -1.319221404 -1.26085153 -1.28877106     0     1     0     1
## 823  0.71851730  0.517515930  0.68735497  0.70833558     0     0     0     1
## 824  0.72901533  0.474298581  0.57759685  0.52787414     0     0     0     1
## 825 -1.41258220 -1.340830079 -1.42548870 -1.31283258     1     0     0     1
## 826 -0.95066901 -1.016699961 -0.79437955 -0.61504834     1     0     0     1
## 827  0.66602717  0.377059546  0.37180039  0.73239710     0     0     0     1
## 828 -1.20262166 -1.258717116 -1.38432941 -1.24064801     0     1     0     1
## 829 -1.62254274 -1.459677789 -1.53524681 -1.64969394     1     0     0     1
## 830 -0.89817887 -0.951873937 -0.83553885 -0.69926368     1     0     1     0
## 831 -1.64353879 -1.459677789 -1.63128516 -1.68578623     1     0     0     1
## 832  0.54005084  0.431081232  0.63247591  0.63615100     0     0     0     1
## 833  0.84449363  1.014515444  0.97547001  0.91285855     0     0     0     1
## 834 -1.66453485 -1.438069114 -1.61756540 -1.64969394     1     0     0     1
## 835 -1.30760193 -1.308417067 -1.41176894 -1.24064801     0     1     0     1
## 836 -1.30760193 -1.297612730 -1.32945035 -1.21658648     0     1     0     1
## 837 -1.54905655 -1.448873451 -1.59012587 -1.60157089     1     0     0     1
## 838  1.18043049  1.122558817  0.90687119  1.04519694     0     0     0     1
## 839 -0.66722227 -0.649352494 -0.31418781  0.38350498     0     1     1     0
## 840 -1.29710390 -1.286808392 -1.38432941 -1.32486335     0     1     1     0
## 841 -1.26560982 -1.243591043 -1.12365389 -1.34892487     0     1     1     0
## 842 -0.86668479 -0.941069600 -0.75322026 -0.47067918     1     0     1     0
## 843  0.50855676  0.820037374  0.59131662  0.35944346     0     0     1     0
## 844  0.57154492  0.409472558  0.49527827  0.62412024     0     0     0     1
## 845  0.88648573  0.776820025  0.89315143  0.50381261     0     0     0     1
## 846  0.62403506  0.333842197  0.49527827  0.40756651     0     0     0     1
## 847  0.86548968  0.938885083  0.79711308  0.98504313     0     0     0     1
## 848  0.72901533  0.582341954  0.74223402  0.75645863     0     0     0     1
## 849 -1.67503287 -1.448873451 -1.63128516 -1.68578623     1     0     0     1
## 850 -0.89817887 -0.941069600 -0.75322026 -0.66317139     1     0     0     1
## 851 -1.00315914 -0.941069600 -0.76694002 -0.62707910     1     0     0     1
## 852 -1.60154668 -1.438069114 -1.57640611 -1.62563242     1     0     0     1
## 853  0.63453308  0.193385812  0.52271780  0.57599719     0     0     0     1
## 854  0.46656465  0.355450871  0.55015733  0.57599719     0     0     0     1
## 855  0.59254098  0.517515930  0.34436087  0.45568956     0     0     1     0
## 856  0.88648573  1.111754480  1.08522813  0.99707389     0     0     0     1
## 857 -1.27610784 -1.211178032 -1.20597248 -1.28877106     0     1     1     0
## 858  0.57154492  0.128559789  0.24832252  0.31132040     0     0     0     1
## 859 -1.63304077 -1.459677789 -1.59012587 -1.68578623     1     0     0     1
## 860  0.91797982  1.252210864  0.85199214  0.91285855     0     0     0     1
## 861  0.62403506  0.517515930  0.44039921  0.67224329     0     0     0     1
## 862  0.60303900  0.409472558  0.81083284  0.87676626     0     0     0     1
## 863  0.72901533  1.295428213  0.63247591  0.47975108     0     0     0     1
## 864 -1.81150723 -1.297612730 -1.23341200 -1.36095563     0     1     0     1
## 865 -1.61204471 -1.448873451 -1.79592233 -1.66172471     1     0     0     1
## 866  0.80250152  1.036124119  0.93431072  0.92488931     0     0     0     1
## 867  0.59254098  0.312233522  0.39923992  0.35944346     0     0     0     1
## 868  0.62403506  0.171777138  0.44039921  0.33538193     0     0     0     1
## 869  1.04395614  1.111754480  1.04406883  1.05722770     0     0     0     1
## 870 -1.62254274 -1.459677789 -1.64500493 -1.62563242     1     0     1     0
## 871  0.67652519  0.506711593  0.71479450  0.76848939     0     0     1     0
## 872  1.00196403  0.971298095  0.86571190  0.90082778     0     0     1     0
## 873 -1.62254274 -1.459677789 -1.67244445 -1.54141708     1     0     1     0
## 874 -1.58055063 -1.448873451 -1.64500493 -1.58954013     1     0     0     1
## 875  0.81299955  1.068537131  0.89315143  0.90082778     0     0     0     1
## 876  0.57154492  0.539124605  0.38552016  0.57599719     0     0     0     1
## 877 -0.89817887 -0.887047914 -0.79437955 -0.37443308     1     0     1     0
## 878  0.51905479  0.269016173  0.37180039  0.44365880     0     0     0     1
## 879  0.58204295  0.841646048  0.53643756  0.38350498     0     0     0     1
## 880  0.88648573  1.760014715  0.98918978  1.03316618     0     0     0     1
## 881  0.69752125  0.798428699  0.42667945  0.76848939     0     0     1     0
## 882  0.58204295  0.744407013  0.48155851  0.47975108     0     0     1     0
## 883  0.57154492  0.809233036  0.49527827  0.60005871     0     0     1     0
## 884 -1.27610784 -1.265199718 -1.23341200 -1.25267877     0     1     1     0
## 885  0.33009030  0.474298581  0.48155851  0.55193566     0     0     1     0
## 886  0.49805873  0.377059546  0.37180039  0.84440031     0     0     0     1
## 887 -1.26560982 -1.308417067 -1.38432941 -1.28877106     0     1     0     1
## 888  0.80250152  0.560733279  0.61875615  0.34741269     0     0     1     0
## 889 -1.00315914 -0.973482612 -0.86297837 -0.68723291     1     0     0     1
## 890 -1.28660587 -1.438069114 -1.20597248 -1.15643267     0     1     0     1
## 891  0.51905479  0.474298581  0.63247591  0.57599719     0     0     0     1
## 892  0.75001138  0.636363640  0.85199214  0.90082778     0     0     1     0
## 893  0.88648573  0.603950628  0.59131662  0.53990490     0     0     0     1
## 894  0.48756071  0.150168463  0.19344346  0.10679744     0     0     0     1
## 895 -1.23411574 -1.254395381 -1.31573059 -1.13237114     0     1     0     1
## 896 -1.31809995 -1.232786706 -1.24713177 -1.22861724     0     1     0     1
## 897 -1.24461376 -1.265199718 -1.23341200 -1.15643267     0     1     0     1
## 898  0.57154492  0.495907256  0.70107473  0.74442787     0     0     1     0
## 899 -1.21311968 -1.265199718 -1.23341200 -1.20455572     0     1     0     1
## 900  0.46656465  1.198189178  0.60503638  0.64818176     0     0     1     0
## 901  0.52955281  0.377059546  0.48155851  0.23913583     0     0     1     0
## 902  0.90748179  1.252210864  0.94803048  0.69630482     0     0     1     0
## 903  0.52955281  0.074538103  0.23460275  0.05867438     0     0     0     1
## 904  0.67652519  1.630362668  0.57759685  0.28725888     0     0     0     1
## 905 -1.31809995 -1.286808392 -1.24713177 -1.18049419     0     1     0     1
## 906  0.46656465  0.042125091  0.01508653  0.28725888     0     0     0     1
## 907  0.56104690  0.193385812  0.46783874  0.33538193     0     0     0     1
## 908 -1.22361771  1.122558817  0.94803048  0.82864321     0     0     1     0
res2 <- optics(hawks_scaled, minPts = 10)
res2
## OPTICS ordering/clustering for 908 objects.
## Parameters: minPts = 10, eps = 3.40653377439247, eps_cl = NA, xi = NA
## Available fields: order, reachdist, coredist, predecessor, minPts, eps,
##                   eps_cl, xi

The data indicates that 3.47 is the maximum size to consider the neighborhood between the data points, so the size has been slightly increased.
We will print the order again for this new analysis.

res2$order
##   [1]   1 571 390 267 260 245 620 185 184 150 149 137  93 824 764 650 408 233
##  [19] 193  25 236 481 426 467 317 787 771 594 281  12  87 378 134 119 861 844
##  [37] 701 471 223 648 283 762 765 334 139   7 165 555 116 891 832 681 508 579
##  [55] 532 131  11 784 295 206 876 561 364  80 323 337 157 823 717 473 270   3
##  [73] 760 758 715 427 135 848 589 506 450 423  79  48 774 552 292 154 113  43
##  [91] 403 182 179 556 526 178  90 355 544 740 707 309 726 528 437 342 854 550
## [109] 391 572 465 183 181 274  51 286 789 615 515 354 222 251 893 585 743 692
## [127] 582 483 649 336 155 180 338 853 489 110 733 504  45 617 770 560 290   2
## [145] 867 878 846 576 478 466 434 380 230  19 862 596 780 601 581 324 258 907
## [163] 240 868 674 117 676 537  32 205  21 412 200 177 173 138  49 672 559 114
## [181] 505 457 745 590 531 385 151 136 397 497 123 744 209 208 204 194 367 614
## [199] 540 558 369 153 694 118 719 147  55 608 775 207  10  92 344 472 197  27
## [217] 785 115 106  46 452 102 462  47 499 496  44 827 470 704 247 455 163 273
## [235] 886 261 812 566 501 392 105 773 631 798 847 658 632 485 428 300 226 124
## [253]  91 816 553 551 384 377 351 421 875 866 833 817 705 522 517 804 573 335
## [271] 732 529 262 492 388  54 564 541 350 716 502 441 254 752 389 246 174  82
## [289]  66  50 229 186 120 723 446 271 463 482 257 225  22 444 860 869 856 578
## [307] 220  97  95  60 728 567 252 164 127  81  73 217 158 718 592   6 591 241
## [325] 145 669 387 187 543 264 189  63 280 435 586  89 731 606 666 430 845 303
## [343]  17 792 750 133 769 534 366 418 140 786 109 652 382 192 510 879 790 706
## [361] 235  58 838 126 610 265  96 858 298 598 339 491  77 248 259 512  15 469
## [379] 146 297 373 894 156  20 721  76 767 484 333 629 407 343 665 376 255 232
## [397] 242 399 348 903 331 906 410  62 863 695  30  52 272 664  78 346 162 381
## [415] 554 714 244 612 148 456  64 880 345 479 667 175 411 498 904 296 282  88
## [433] 349 347 132 622 243 796 414 362  59 538 536 433 678 703 645  23 326 453
## [451] 266  33 888 487 855 778 679 402 365 696 883 881 671 898 782 647 460 871
## [469] 602 600 438 250  31 372 278 237 609  72  14 593 547 190 159  13 199 169
## [487] 285 203 800 605 294 892 616 525 405 691 682  71 514 882 275  28 872 777
## [505] 759 548 683 409 291 289   9 480 293 269 641 902 597  94 440  18 709   8
## [523]  75 332  70 843  36 607 468 436 256 406 401  24 793 584  37  34 901 768
## [541] 224 238 797 885 549 613 494 900 507 474  39  35 651 396  16 766 210  38
## [559] 795  74 191 700 166 356 811 359 603 476 398 539 322 699 908 490 361 330
## [577] 321 889 851 850 826 821 772 708 599 533 371 808 524 299 642 234 319 542
## [595] 814 825 820 783 618 488 360 315 284  26 231 837 874 852 829 739 724 791
## [613] 737 657 633 535 810 527 859 831 849 805 748 636 520 503 307 304 712 646
## [631] 626 422 314 308 655 419 659 311 417 627 587 834 628 815 302 638 495  41
## [649] 101 729 806 394 368 755 379 196 432 690  85 604 637 509 144 142 753 710
## [667] 574 100 698 865 813 661 112 212 130 818  65 107 363 141 121 713 213  40
## [685] 341 357 128 287 152 429  42  56 819 809 788 673 415 400 310 353 239 108
## [703]  67   4 249 530 711 111 640 327 328 685 899 897 751 779 836 807 802 794
## [721] 776 727 624 448 370 747 828 799 687 697 887 803 746 688 639 623 500 475
## [739] 313 219 523 416 621 214 630 595 202 801 749  29 374 276 722 228 176 171
## [757] 375 172 160 104  84   5 822 730 301 835 306 413  83 167 129 895 611 198
## [775] 905 896 218 168  99 227 684 464 312 625 340 161 693  53 781 195 201 216
## [793] 420 890 277 215 211 253 425 635 329 305 320 864 318 325 493 668 663 756
## [811] 580 575 570 562 870 761 565 451 449 670 654 125 268 386 736 656 122  68
## [829] 873 563 545 738 583 424 842 877 830 757 643 443 221  86  57 288 634 188
## [847] 742 358 763 884 857 734 660 519 513 458 439 431 675 518 461 404 143 619
## [865] 725 644 486 447 316 170 395  98 454 477 557 689 516 841 653 568 840 569
## [883] 546 735 677  69 662 103 383 352 393 702 839 686 680 588 577 459 445 442
## [901] 521 754 511 263 279 720 741  61

It is clear that the number of valleys has increased considerably, as well as their size.

plot(res2, main= "Diagram reachability plot")

k <- 9
kNNdistplot(hawks_scaled, k = k)

We can see that the elbow continues to rise drastically, even a bit later from 0.6 to 0.8, shifting to a mean of 0.7. We will introduce this new change in epsilon.

res2 <- extractDBSCAN(res2, eps_cl = 0.7)
res2
## OPTICS ordering/clustering for 908 objects.
## Parameters: minPts = 10, eps = 3.40653377439247, eps_cl = 0.7, xi = NA
## The clustering contains 8 cluster(s) and 51 noise points.
## 
##   0   1   2   3   4   5   6   7   8 
##  51 438 115 110  18  93  27  14  42 
## 
## Available fields: order, reachdist, coredist, predecessor, minPts, eps,
##                   eps_cl, xi, cluster

As expected, the number of clusters changes radically, we now have 8 clusters and much more noise, as seen in the plot.

plot(res2)

Upon plotting, we see that the clusters themselves overlap, concluding that this analysis is not valid and is erroneous.

hullplot(hawks_scaled2, res2)
## Warning in hullplot(hawks_scaled2, res2): Not enough colors. Some colors will
## be reused.

We return to our normalized dataset without the dummy attributes and change the epsilon value to 0.6 and 0.61, determining if we see significant changes since we are right on the limit.

res06 <- extractDBSCAN(res, eps_cl = 0.6)
res06
## OPTICS ordering/clustering for 908 objects.
## Parameters: minPts = 10, eps = 3.07488223798005, eps_cl = 0.6, xi = NA
## The clustering contains 3 cluster(s) and 29 noise points.
## 
##   0   1   2   3 
##  29 559  61 259 
## 
## Available fields: order, reachdist, coredist, predecessor, minPts, eps,
##                   eps_cl, xi, cluster
res61 <- extractDBSCAN(res, eps_cl = 0.61)
res61
## OPTICS ordering/clustering for 908 objects.
## Parameters: minPts = 10, eps = 3.07488223798005, eps_cl = 0.61, xi = NA
## The clustering contains 2 cluster(s) and 28 noise points.
## 
##   0   1   2 
##  28 559 321 
## 
## Available fields: order, reachdist, coredist, predecessor, minPts, eps,
##                   eps_cl, xi, cluster

Conclusions ESP

The tests with eps_cl values of 0.55, 0.6, and 0.61 for the OPTICS algorithm provide a clear insight into the sensitivity of the epsilon parameter in cluster identification. With eps_cl = 0.55 and eps_cl = 0.6, OPTICS identifies 3 clusters, with a small variation in the number of noise points (31 and 29, respectively). However, when increasing eps_cl to 0.61, the number of clusters reduces to 2, and the noise points decrease to 28.

This indicates that the epsilon value within the range of 0.55 to 0.61 is a critical margin where small changes can significantly affect the clustering structure. This behavior suggests that the data has variable density, which is sensitive to epsilon adjustments, affecting the algorithm’s ability to differentiate between dense clusters and noise points.

In comparison, the DBSCAN and OPTICS methods show greater stability and clarity in the clustering structure, consistently identifying three main clusters with different eps_cl values. The average number of noise points varied slightly, but the overall result was consistent with the data structure.
This stability suggests that density-based methods like DBSCAN and OPTICS may be more suitable for these specific data compared to partition-based methods like k-means, especially due to their ability to handle density variations and detect noise points.

Exercise 3: Comparison of k-means and DBSCAN Methods

Comparison of k-means and DBSCAN Methods

Each of these clustering algorithms has its pros and cons. Choosing the best one depends on the structure and characteristics of the dataset and the purpose of the clustering. For example, if we want to group customers and need all the data to belong to a group, K-means is useful because it guarantees that each data point will belong to a cluster. On the other hand, if we want to filter noise and focus only on certain subsets, DBSCAN is better, as it allows ignoring isolated data points and focusing only on the most relevant ones, such as in an analysis of areas with prospect potential.

Comparison of Algorithms

K-means forms spherical clusters and requires specifying the number of groups beforehand. It is efficient with large datasets and is not affected by the variation in densities between points. However, it is sensitive to noise and outliers, which can distort the formation of clusters and make anomaly detection difficult. It only needs to define one parameter: the desired number of clusters (K).

On the other hand, DBSCAN creates irregularly shaped clusters of variable sizes without needing to specify the number of groups beforehand. Although not as efficient with high-dimensional data, it handles noise well and can mark certain points as “noise” or out of the clusters, making anomaly detection easier. However, it is sensitive to the choice of its two parameters: the neighborhood radius (R) and the minimum number of points (M) in that neighborhood, and it doesn’t perform well with sparse data or with highly variable densities.

Both algorithms have strengths: K-means works well on large, uniform data, while DBSCAN excels with complex densities and noise. The choice between them should be based on the type of data and the specific needs of the analysis.

Real-world Comparison

In a study conducted by Schubert et al. (2017), K-Means and DBSCAN were compared on simulated datasets with different density and shape configurations. The results showed that DBSCAN outperformed K-Means in situations where clusters had different shapes and sizes, while K-Means was more efficient in uniformly distributed data. This study illustrates how the choice of algorithm can significantly affect data interpretation.
A practical use case is in analyzing customer data in the retail sector. If K-Means is used, the segmentation may be appropriate if customers group consistently and without significant outliers. However, if the data contains customers with extreme behaviors, DBSCAN could provide better insights by identifying those outliers and preserving the integrity of the main clusters.

Conclusion

The choice between K-Means and DBSCAN depends on the type of data and the application context. K-Means is preferable for well-structured and spherical data, while DBSCAN is the best choice for data with complex shapes and the presence of outliers. Understanding the characteristics of each algorithm allows analysts to select the most suitable one, thus improving the quality of the results and data-driven decision-making.

Comparison of k-means and DBSCAN Methods in Our Analysis

The analysis conducted concludes that, in the dataset used, three heterogeneous groups were identified, and DBSCAN and OPTICS methods outperformed K-means, especially in a dataset with much noise and variability. However, the results were not entirely satisfactory.

Comparison of Clustering Methods: K-means and DBSCAN

K-means: A prototype-based clustering method that seeks to minimize the variance within each group. While simple and effective, it requires knowing the number of clusters beforehand and tends to form circular clusters, which limits its usefulness in noisy datasets or datasets with complex shapes.

DBSCAN: A density-based method that groups points with a high concentration in their neighborhood, allowing the identification of non-linear clusters and handling noise and outliers well. However, it is sensitive to the input parameters, and its performance can be affected in high-dimensional datasets.

OPTICS was explored as an extension of DBSCAN, which allows identifying clusters with variable densities and represents the results graphically, facilitating analysis in contexts where clustering patterns are not obvious.

Final Conclusions in Comparison of Results

When applying both methods to a dataset of raptor birds, it was observed that K-means generated uniform clusters with good separation, while DBSCAN identified more complex and dense clusters and handled noise better. OPTICS provided a useful visual representation of the structure and density of the data.

Regarding cluster validation, both techniques showed good cohesion and separation according to the average silhouette index, indicating less compactness and separation between clusters.

Both methods can be useful, depending on the nature of the dataset and the research questions.