Goal is to predict attrition, employees who are likely to leave the company

Import Data

library(tidyverse)
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library(readr)
library(correlationfunnel)
## ══ correlationfunnel Tip #1 ════════════════════════════════════════════════════
## Make sure your data is not overly imbalanced prior to using `correlate()`.
## If less than 5% imbalance, consider sampling. :)
library(tidymodels)
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library(themis)
library(usemodels)
library(doParallel)
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data <- read_csv("../00_data/WA_Fn-UseC_-HR-Employee-Attrition.csv")
## Rows: 1470 Columns: 35
## ── Column specification ────────────────────────────────────────────────────────
## Delimiter: ","
## chr  (9): Attrition, BusinessTravel, Department, EducationField, Gender, Job...
## dbl (26): Age, DailyRate, DistanceFromHome, Education, EmployeeCount, Employ...
## 
## ℹ Use `spec()` to retrieve the full column specification for this data.
## ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.

Clean Dataset

factors_vec <- data %>% select(Education, EnvironmentSatisfaction, JobInvolvement, JobSatisfaction, PerformanceRating, RelationshipSatisfaction, WorkLifeBalance) %>% names()

data_clean <- data %>%
    
    # Address factors imported at numeric
    mutate(across(all_of(factors_vec), as.factor)) %>%
    
    # Drop zero-variance variables
    select(-c(Over18, EmployeeCount, StandardHours))

Explore Data

data_clean %>% count(Attrition)
## # A tibble: 2 × 2
##   Attrition     n
##   <chr>     <int>
## 1 No         1233
## 2 Yes         237
data_clean %>%
    ggplot(aes(Attrition)) +
    geom_bar()

Attrition vs. Monthly Income

data_clean %>%
    ggplot(aes(Attrition, MonthlyIncome)) +
    geom_boxplot()

correlation plot

# Step 1: Binarize
data_binarized <- data_clean %>%
    select(-EmployeeNumber) %>%
    binarize()

data_binarized %>% glimpse()
## Rows: 1,470
## Columns: 120
## $ `Age__-Inf_30`                       <dbl> 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, …
## $ Age__30_36                           <dbl> 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, …
## $ Age__36_43                           <dbl> 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ Age__43_Inf                          <dbl> 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ Attrition__No                        <dbl> 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, …
## $ Attrition__Yes                       <dbl> 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ `BusinessTravel__Non-Travel`         <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ BusinessTravel__Travel_Frequently    <dbl> 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, …
## $ BusinessTravel__Travel_Rarely        <dbl> 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, …
## $ `DailyRate__-Inf_465`                <dbl> 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ DailyRate__465_802                   <dbl> 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, …
## $ DailyRate__802_1157                  <dbl> 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, …
## $ DailyRate__1157_Inf                  <dbl> 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, …
## $ Department__Human_Resources          <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ `Department__Research_&_Development` <dbl> 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, …
## $ Department__Sales                    <dbl> 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ `DistanceFromHome__-Inf_2`           <dbl> 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, …
## $ DistanceFromHome__2_7                <dbl> 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, …
## $ DistanceFromHome__7_14               <dbl> 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ DistanceFromHome__14_Inf             <dbl> 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, …
## $ Education__1                         <dbl> 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, …
## $ Education__2                         <dbl> 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, …
## $ Education__3                         <dbl> 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, …
## $ Education__4                         <dbl> 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, …
## $ Education__5                         <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField__Human_Resources      <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField__Life_Sciences        <dbl> 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, …
## $ EducationField__Marketing            <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField__Medical              <dbl> 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, …
## $ EducationField__Other                <dbl> 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField__Technical_Degree     <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EnvironmentSatisfaction__1           <dbl> 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, …
## $ EnvironmentSatisfaction__2           <dbl> 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EnvironmentSatisfaction__3           <dbl> 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, …
## $ EnvironmentSatisfaction__4           <dbl> 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, …
## $ Gender__Female                       <dbl> 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, …
## $ Gender__Male                         <dbl> 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, …
## $ `HourlyRate__-Inf_48`                <dbl> 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, …
## $ HourlyRate__48_66                    <dbl> 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, …
## $ HourlyRate__66_83.75                 <dbl> 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, …
## $ HourlyRate__83.75_Inf                <dbl> 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, …
## $ JobInvolvement__1                    <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobInvolvement__2                    <dbl> 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ JobInvolvement__3                    <dbl> 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, …
## $ JobInvolvement__4                    <dbl> 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, …
## $ JobLevel__1                          <dbl> 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, …
## $ JobLevel__2                          <dbl> 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, …
## $ JobLevel__3                          <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ JobLevel__4                          <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobLevel__5                          <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole__Healthcare_Representative   <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, …
## $ JobRole__Human_Resources             <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole__Laboratory_Technician       <dbl> 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, …
## $ JobRole__Manager                     <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole__Manufacturing_Director      <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ JobRole__Research_Director           <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole__Research_Scientist          <dbl> 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole__Sales_Executive             <dbl> 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole__Sales_Representative        <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobSatisfaction__1                   <dbl> 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ JobSatisfaction__2                   <dbl> 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, …
## $ JobSatisfaction__3                   <dbl> 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, …
## $ JobSatisfaction__4                   <dbl> 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, …
## $ MaritalStatus__Divorced              <dbl> 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, …
## $ MaritalStatus__Married               <dbl> 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, …
## $ MaritalStatus__Single                <dbl> 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, …
## $ `MonthlyIncome__-Inf_2911`           <dbl> 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, …
## $ MonthlyIncome__2911_4919             <dbl> 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, …
## $ MonthlyIncome__4919_8379             <dbl> 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, …
## $ MonthlyIncome__8379_Inf              <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ `MonthlyRate__-Inf_8047`             <dbl> 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ MonthlyRate__8047_14235.5            <dbl> 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, …
## $ MonthlyRate__14235.5_20461.5         <dbl> 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, …
## $ MonthlyRate__20461.5_Inf             <dbl> 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, …
## $ `NumCompaniesWorked__-Inf_1`         <dbl> 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, …
## $ NumCompaniesWorked__1_2              <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ NumCompaniesWorked__2_4              <dbl> 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ NumCompaniesWorked__4_Inf            <dbl> 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, …
## $ OverTime__No                         <dbl> 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, …
## $ OverTime__Yes                        <dbl> 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, …
## $ `PercentSalaryHike__-Inf_12`         <dbl> 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, …
## $ PercentSalaryHike__12_14             <dbl> 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, …
## $ PercentSalaryHike__14_18             <dbl> 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ PercentSalaryHike__18_Inf            <dbl> 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, …
## $ PerformanceRating__3                 <dbl> 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, …
## $ PerformanceRating__4                 <dbl> 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, …
## $ RelationshipSatisfaction__1          <dbl> 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ RelationshipSatisfaction__2          <dbl> 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, …
## $ RelationshipSatisfaction__3          <dbl> 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, …
## $ RelationshipSatisfaction__4          <dbl> 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, …
## $ StockOptionLevel__0                  <dbl> 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, …
## $ StockOptionLevel__1                  <dbl> 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, …
## $ StockOptionLevel__2                  <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, …
## $ StockOptionLevel__3                  <dbl> 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ `TotalWorkingYears__-Inf_6`          <dbl> 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, …
## $ TotalWorkingYears__6_10              <dbl> 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, …
## $ TotalWorkingYears__10_15             <dbl> 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ TotalWorkingYears__15_Inf            <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, …
## $ `TrainingTimesLastYear__-Inf_2`      <dbl> 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, …
## $ TrainingTimesLastYear__2_3           <dbl> 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, …
## $ TrainingTimesLastYear__3_Inf         <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, …
## $ WorkLifeBalance__1                   <dbl> 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ WorkLifeBalance__2                   <dbl> 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, …
## $ WorkLifeBalance__3                   <dbl> 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, …
## $ WorkLifeBalance__4                   <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ `YearsAtCompany__-Inf_3`             <dbl> 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, …
## $ YearsAtCompany__3_5                  <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, …
## $ YearsAtCompany__5_9                  <dbl> 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, …
## $ YearsAtCompany__9_Inf                <dbl> 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ `YearsInCurrentRole__-Inf_2`         <dbl> 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, …
## $ YearsInCurrentRole__2_3              <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ YearsInCurrentRole__3_7              <dbl> 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, …
## $ YearsInCurrentRole__7_Inf            <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ `YearsSinceLastPromotion__-Inf_1`    <dbl> 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, …
## $ YearsSinceLastPromotion__1_3         <dbl> 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, …
## $ YearsSinceLastPromotion__3_Inf       <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, …
## $ `YearsWithCurrManager__-Inf_2`       <dbl> 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, …
## $ YearsWithCurrManager__2_3            <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, …
## $ YearsWithCurrManager__3_7            <dbl> 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, …
## $ YearsWithCurrManager__7_Inf          <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
# Step 2: Correlation
data_correlation <- data_binarized %>%
    correlate(Attrition__Yes)

data_correlation
## # A tibble: 120 × 3
##    feature           bin       correlation
##    <fct>             <chr>           <dbl>
##  1 Attrition         No             -1    
##  2 Attrition         Yes             1    
##  3 OverTime          Yes             0.246
##  4 OverTime          No             -0.246
##  5 JobLevel          1               0.213
##  6 MonthlyIncome     -Inf_2911       0.207
##  7 StockOptionLevel  0               0.195
##  8 YearsAtCompany    -Inf_3          0.183
##  9 MaritalStatus     Single          0.175
## 10 TotalWorkingYears -Inf_6          0.169
## # ℹ 110 more rows
# Step 3: Plot
data_correlation %>%
    correlationfunnel::plot_correlation_funnel()
## Warning: ggrepel: 72 unlabeled data points (too many overlaps). Consider
## increasing max.overlaps

Model Building

Split Data

set.seed(1234)
data_clean <- data_clean %>% sample_n(100)

data_split <- initial_split(data_clean, strata = Attrition)
data_train <- training(data_split)
data_test <- testing(data_split)

data_cv <- rsample::vfold_cv(data_train, strata = Attrition)
data_cv
## #  10-fold cross-validation using stratification 
## # A tibble: 10 × 2
##    splits         id    
##    <list>         <chr> 
##  1 <split [66/8]> Fold01
##  2 <split [66/8]> Fold02
##  3 <split [66/8]> Fold03
##  4 <split [66/8]> Fold04
##  5 <split [67/7]> Fold05
##  6 <split [67/7]> Fold06
##  7 <split [67/7]> Fold07
##  8 <split [67/7]> Fold08
##  9 <split [67/7]> Fold09
## 10 <split [67/7]> Fold10

Preprocess Data

xgboost_rec <- recipes::recipe(Attrition ~ ., data = data_train) %>%
    update_role(EmployeeNumber, new_role = "ID") %>%
    step_dummy(all_nominal_predictors()) %>%
    step_smote(Attrition)

xgboost_rec %>% prep() %>% juice() %>% glimpse()
## Rows: 134
## Columns: 59
## $ Age                               <dbl> 27, 39, 25, 48, 31, 28, 31, 49, 28, …
## $ DailyRate                         <dbl> 1377, 1462, 949, 715, 1222, 640, 329…
## $ DistanceFromHome                  <dbl> 11, 6, 1, 1, 11, 1, 1, 4, 4, 2, 6, 1…
## $ EmployeeNumber                    <dbl> 1434, 1588, 1415, 1263, 895, 1301, 5…
## $ HourlyRate                        <dbl> 91, 38, 81, 76, 48, 84, 98, 85, 43, …
## $ JobLevel                          <dbl> 1, 3, 1, 5, 1, 1, 1, 5, 2, 1, 1, 3, …
## $ MonthlyIncome                     <dbl> 2099, 8237, 3229, 18265, 2356, 2080,…
## $ MonthlyRate                       <dbl> 7679, 4658, 4910, 8733, 14871, 4732,…
## $ NumCompaniesWorked                <dbl> 0, 2, 4, 6, 3, 2, 1, 2, 1, 3, 0, 4, …
## $ PercentSalaryHike                 <dbl> 14, 11, 11, 12, 19, 11, 12, 13, 15, …
## $ StockOptionLevel                  <dbl> 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, …
## $ TotalWorkingYears                 <dbl> 6, 11, 7, 25, 8, 5, 4, 23, 5, 7, 16,…
## $ TrainingTimesLastYear             <dbl> 3, 3, 2, 3, 2, 2, 3, 2, 3, 3, 4, 2, …
## $ YearsAtCompany                    <dbl> 5, 7, 3, 1, 6, 3, 4, 1, 5, 3, 15, 11…
## $ YearsInCurrentRole                <dbl> 0, 6, 2, 0, 4, 2, 2, 0, 4, 2, 13, 7,…
## $ YearsSinceLastPromotion           <dbl> 1, 7, 0, 0, 0, 1, 3, 0, 0, 1, 10, 4,…
## $ YearsWithCurrManager              <dbl> 4, 6, 2, 0, 2, 2, 2, 0, 4, 2, 11, 8,…
## $ Attrition                         <fct> No, No, No, No, No, No, No, No, No, …
## $ BusinessTravel_Travel_Frequently  <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ BusinessTravel_Travel_Rarely      <dbl> 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, …
## $ Department_Research...Development <dbl> 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, …
## $ Department_Sales                  <dbl> 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, …
## $ Education_X2                      <dbl> 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, …
## $ Education_X3                      <dbl> 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, …
## $ Education_X4                      <dbl> 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, …
## $ Education_X5                      <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField_Life.Sciences      <dbl> 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, …
## $ EducationField_Marketing          <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField_Medical            <dbl> 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, …
## $ EducationField_Other              <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ EducationField_Technical.Degree   <dbl> 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, …
## $ EnvironmentSatisfaction_X2        <dbl> 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, …
## $ EnvironmentSatisfaction_X3        <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, …
## $ EnvironmentSatisfaction_X4        <dbl> 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, …
## $ Gender_Male                       <dbl> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, …
## $ JobInvolvement_X2                 <dbl> 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, …
## $ JobInvolvement_X3                 <dbl> 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, …
## $ JobInvolvement_X4                 <dbl> 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole_Human.Resources           <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole_Laboratory.Technician     <dbl> 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, …
## $ JobRole_Manager                   <dbl> 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, …
## $ JobRole_Manufacturing.Director    <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobRole_Research.Director         <dbl> 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, …
## $ JobRole_Research.Scientist        <dbl> 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, …
## $ JobRole_Sales.Executive           <dbl> 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, …
## $ JobRole_Sales.Representative      <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ JobSatisfaction_X2                <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ JobSatisfaction_X3                <dbl> 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, …
## $ JobSatisfaction_X4                <dbl> 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, …
## $ MaritalStatus_Married             <dbl> 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, …
## $ MaritalStatus_Single              <dbl> 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, …
## $ OverTime_Yes                      <dbl> 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, …
## $ PerformanceRating_X4              <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, …
## $ RelationshipSatisfaction_X2       <dbl> 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, …
## $ RelationshipSatisfaction_X3       <dbl> 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, …
## $ RelationshipSatisfaction_X4       <dbl> 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, …
## $ WorkLifeBalance_X2                <dbl> 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, …
## $ WorkLifeBalance_X3                <dbl> 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, …
## $ WorkLifeBalance_X4                <dbl> 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, …

Specify Model

xgboost_spec <- 
  boost_tree(trees = tune()) %>% 
  set_mode("classification") %>% 
  set_engine("xgboost") 

xgboost_workflow <- 
  workflow() %>% 
  add_recipe(xgboost_rec) %>% 
  add_model(xgboost_spec) 

Tune Hyperparameters

doParallel::registerDoParallel()

set.seed(17375)
xgboost_tune <-
  tune_grid(xgboost_workflow, 
            resamples = data_cv, 
            grid = 5)