## Loading required package: Matrix
##
## Attaching package: 'arules'
## The following objects are masked from 'package:base':
##
## abbreviate, write
## transactions as itemMatrix in sparse format with
## 9835 rows (elements/itemsets/transactions) and
## 169 columns (items) and a density of 0.02609146
##
## most frequent items:
## whole milk other vegetables rolls/buns soda
## 2513 1903 1809 1715
## yogurt (Other)
## 1372 34055
##
## element (itemset/transaction) length distribution:
## sizes
## 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
## 2159 1643 1299 1005 855 645 545 438 350 246 182 117 78 77 55
## 16 17 18 19 20 21 22 23 24 26 27 28 29 32
## 46 29 14 14 9 11 4 6 1 1 1 1 3 1
##
## Min. 1st Qu. Median Mean 3rd Qu. Max.
## 1.000 2.000 3.000 4.409 6.000 32.000
##
## includes extended item information - examples:
## labels
## 1 abrasive cleaner
## 2 artif. sweetener
## 3 baby cosmetics
## items
## [1] {citrus fruit,
## margarine,
## ready soups,
## semi-finished bread}
## [2] {coffee,
## tropical fruit,
## yogurt}
## [3] {whole milk}
## [4] {cream cheese,
## meat spreads,
## pip fruit,
## yogurt}
## [5] {condensed milk,
## long life bakery product,
## other vegetables,
## whole milk}
## abrasive cleaner artif. sweetener baby cosmetics
## 0.0035587189 0.0032536858 0.0006100661
## Apriori
##
## Parameter specification:
## confidence minval smax arem aval originalSupport maxtime support minlen
## 0.8 0.1 1 none FALSE TRUE 5 0.1 1
## maxlen target ext
## 10 rules FALSE
##
## Algorithmic control:
## filter tree heap memopt load sort verbose
## 0.1 TRUE TRUE FALSE TRUE 2 TRUE
##
## Absolute minimum support count: 983
##
## set item appearances ...[0 item(s)] done [0.00s].
## set transactions ...[169 item(s), 9835 transaction(s)] done [0.00s].
## sorting and recoding items ... [8 item(s)] done [0.00s].
## creating transaction tree ... done [0.00s].
## checking subsets of size 1 2 done [0.00s].
## writing ... [0 rule(s)] done [0.00s].
## creating S4 object ... done [0.00s].
## set of 0 rules
## Apriori
##
## Parameter specification:
## confidence minval smax arem aval originalSupport maxtime support minlen
## 0.25 0.1 1 none FALSE TRUE 5 0.006 2
## maxlen target ext
## 10 rules FALSE
##
## Algorithmic control:
## filter tree heap memopt load sort verbose
## 0.1 TRUE TRUE FALSE TRUE 2 TRUE
##
## Absolute minimum support count: 59
##
## set item appearances ...[0 item(s)] done [0.00s].
## set transactions ...[169 item(s), 9835 transaction(s)] done [0.00s].
## sorting and recoding items ... [109 item(s)] done [0.00s].
## creating transaction tree ... done [0.00s].
## checking subsets of size 1 2 3 4 done [0.00s].
## writing ... [463 rule(s)] done [0.00s].
## creating S4 object ... done [0.00s].
## set of 463 rules
## set of 463 rules
##
## rule length distribution (lhs + rhs):sizes
## 2 3 4
## 150 297 16
##
## Min. 1st Qu. Median Mean 3rd Qu. Max.
## 2.000 2.000 3.000 2.711 3.000 4.000
##
## summary of quality measures:
## support confidence lift count
## Min. :0.006101 Min. :0.2500 Min. :0.9932 Min. : 60.0
## 1st Qu.:0.007117 1st Qu.:0.2971 1st Qu.:1.6229 1st Qu.: 70.0
## Median :0.008744 Median :0.3554 Median :1.9332 Median : 86.0
## Mean :0.011539 Mean :0.3786 Mean :2.0351 Mean :113.5
## 3rd Qu.:0.012303 3rd Qu.:0.4495 3rd Qu.:2.3565 3rd Qu.:121.0
## Max. :0.074835 Max. :0.6600 Max. :3.9565 Max. :736.0
##
## mining info:
## data ntransactions support confidence
## groceries 9835 0.006 0.25
## lhs rhs support confidence lift
## [1] {potted plants} => {whole milk} 0.006914082 0.4000000 1.565460
## [2] {pasta} => {whole milk} 0.006100661 0.4054054 1.586614
## [3] {herbs} => {root vegetables} 0.007015760 0.4312500 3.956477
## count
## [1] 68
## [2] 60
## [3] 69
## lhs rhs support confidence lift count
## [1] {herbs} => {root vegetables} 0.007015760 0.4312500 3.956477 69
## [2] {berries} => {whipped/sour cream} 0.009049314 0.2721713 3.796886 89
## [3] {other vegetables,
## tropical fruit,
## whole milk} => {root vegetables} 0.007015760 0.4107143 3.768074 69
## [4] {beef,
## other vegetables} => {root vegetables} 0.007930859 0.4020619 3.688692 78
## [5] {other vegetables,
## tropical fruit} => {pip fruit} 0.009456024 0.2634561 3.482649 93
## lhs rhs support confidence lift
## [1] {berries} => {whipped/sour cream} 0.009049314 0.2721713 3.796886
## [2] {berries} => {yogurt} 0.010574479 0.3180428 2.279848
## [3] {berries} => {other vegetables} 0.010269446 0.3088685 1.596280
## [4] {berries} => {whole milk} 0.011794611 0.3547401 1.388328
## count
## [1] 89
## [2] 104
## [3] 101
## [4] 116
## 'data.frame': 463 obs. of 5 variables:
## $ rules : Factor w/ 463 levels "{baking powder} => {other vegetables}",..: 340 302 207 206 208 341 402 21 139 140 ...
## $ support : num 0.00691 0.0061 0.00702 0.00773 0.00773 ...
## $ confidence: num 0.4 0.405 0.431 0.475 0.475 ...
## $ lift : num 1.57 1.59 3.96 2.45 1.86 ...
## $ count : num 68 60 69 76 76 69 70 67 63 88 ...