itemFrequency(Groceries)
## frankfurter sausage
## 0.0589730554 0.0939501779
## liver loaf ham
## 0.0050838841 0.0260294865
## meat finished products
## 0.0258261312 0.0065073716
## organic sausage chicken
## 0.0022369090 0.0429079817
## turkey pork
## 0.0081342145 0.0576512456
## beef hamburger meat
## 0.0524656838 0.0332486019
## fish citrus fruit
## 0.0029486528 0.0827656329
## tropical fruit pip fruit
## 0.1049313676 0.0756481952
## grapes berries
## 0.0223690900 0.0332486019
## nuts/prunes root vegetables
## 0.0033553635 0.1089984748
## onions herbs
## 0.0310116929 0.0162684291
## other vegetables packaged fruit/vegetables
## 0.1934926284 0.0130147433
## whole milk butter
## 0.2555160142 0.0554143366
## curd dessert
## 0.0532791052 0.0371123538
## butter milk yogurt
## 0.0279613625 0.1395017794
## whipped/sour cream beverages
## 0.0716827656 0.0260294865
## UHT-milk condensed milk
## 0.0334519573 0.0102694459
## cream soft cheese
## 0.0013218099 0.0170818505
## sliced cheese hard cheese
## 0.0245043213 0.0245043213
## cream cheese processed cheese
## 0.0396542959 0.0165734621
## spread cheese curd cheese
## 0.0111845450 0.0050838841
## specialty cheese mayonnaise
## 0.0085409253 0.0091509914
## salad dressing tidbits
## 0.0008134215 0.0023385867
## frozen vegetables frozen fruits
## 0.0480935435 0.0012201322
## frozen meals frozen fish
## 0.0283680732 0.0116929334
## frozen chicken ice cream
## 0.0006100661 0.0250127097
## frozen dessert frozen potato products
## 0.0107778343 0.0084392476
## domestic eggs rolls/buns
## 0.0634468734 0.1839349263
## white bread brown bread
## 0.0420945602 0.0648703610
## pastry roll products
## 0.0889679715 0.0102694459
## semi-finished bread zwieback
## 0.0176919166 0.0069140824
## potato products flour
## 0.0028469751 0.0173868836
## salt rice
## 0.0107778343 0.0076258261
## pasta vinegar
## 0.0150482969 0.0065073716
## oil margarine
## 0.0280630402 0.0585663447
## specialty fat sugar
## 0.0036603965 0.0338586680
## artif. sweetener honey
## 0.0032536858 0.0015251652
## mustard ketchup
## 0.0119979664 0.0042704626
## spices soups
## 0.0051855618 0.0068124047
## ready soups Instant food products
## 0.0018301983 0.0080325369
## sauces cereals
## 0.0054905948 0.0056939502
## organic products baking powder
## 0.0016268429 0.0176919166
## preservation products pudding powder
## 0.0002033554 0.0023385867
## canned vegetables canned fruit
## 0.0107778343 0.0032536858
## pickled vegetables specialty vegetables
## 0.0178952720 0.0017285206
## jam sweet spreads
## 0.0053889171 0.0090493137
## meat spreads canned fish
## 0.0042704626 0.0150482969
## dog food cat food
## 0.0085409253 0.0232841891
## pet care baby food
## 0.0094560244 0.0001016777
## coffee instant coffee
## 0.0580579563 0.0074224708
## tea cocoa drinks
## 0.0038637519 0.0022369090
## bottled water soda
## 0.1105236401 0.1743772242
## misc. beverages fruit/vegetable juice
## 0.0283680732 0.0722928317
## syrup bottled beer
## 0.0032536858 0.0805287239
## canned beer brandy
## 0.0776817489 0.0041687850
## whisky liquor
## 0.0008134215 0.0110828673
## rum liqueur
## 0.0044738180 0.0009150991
## liquor (appetizer) white wine
## 0.0079308592 0.0190137265
## red/blush wine prosecco
## 0.0192170819 0.0020335536
## sparkling wine salty snack
## 0.0055922725 0.0378240976
## popcorn nut snack
## 0.0072191154 0.0031520081
## snack products long life bakery product
## 0.0030503305 0.0374173869
## waffles cake bar
## 0.0384341637 0.0132180986
## chewing gum chocolate
## 0.0210472801 0.0496187087
## cooking chocolate specialty chocolate
## 0.0025419420 0.0304016268
## specialty bar chocolate marshmallow
## 0.0273512964 0.0090493137
## candy seasonal products
## 0.0298932384 0.0142348754
## detergent softener
## 0.0192170819 0.0054905948
## decalcifier dish cleaner
## 0.0015251652 0.0104728012
## abrasive cleaner cleaner
## 0.0035587189 0.0050838841
## toilet cleaner bathroom cleaner
## 0.0007117438 0.0027452974
## hair spray dental care
## 0.0011184545 0.0057956279
## male cosmetics make up remover
## 0.0045754957 0.0008134215
## skin care female sanitary products
## 0.0035587189 0.0061006609
## baby cosmetics soap
## 0.0006100661 0.0026436197
## rubbing alcohol hygiene articles
## 0.0010167768 0.0329435689
## napkins dishes
## 0.0523640061 0.0175902389
## cookware kitchen utensil
## 0.0027452974 0.0004067107
## cling film/bags kitchen towels
## 0.0113879004 0.0059989832
## house keeping products candles
## 0.0083375699 0.0089476360
## light bulbs sound storage medium
## 0.0041687850 0.0001016777
## newspapers photo/film
## 0.0798169802 0.0092526690
## pot plants flower soil/fertilizer
## 0.0172852059 0.0019318760
## flower (seeds) shopping bags
## 0.0103711235 0.0985256736
## bags
## 0.0004067107
##itemFrequencyPlot(Groceries,cex.name=0.5)
gro <- apriori(Groceries,parameter=list(support=.01,confidence=.4))
## Apriori
##
## Parameter specification:
## confidence minval smax arem aval originalSupport maxtime support minlen
## 0.4 0.1 1 none FALSE TRUE 5 0.01 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: 98
##
## set item appearances ...[0 item(s)] done [0.00s].
## set transactions ...[169 item(s), 9835 transaction(s)] done [0.00s].
## sorting and recoding items ... [88 item(s)] done [0.00s].
## creating transaction tree ... done [0.00s].
## checking subsets of size 1 2 3 4 done [0.00s].
## writing ... [62 rule(s)] done [0.00s].
## creating S4 object ... done [0.00s].
inspect(sort(gro, by = "confidence"))
## lhs rhs support confidence lift count
## [1] {citrus fruit,
## root vegetables} => {other vegetables} 0.01037112 0.5862069 3.029608 102
## [2] {tropical fruit,
## root vegetables} => {other vegetables} 0.01230300 0.5845411 3.020999 121
## [3] {curd,
## yogurt} => {whole milk} 0.01006609 0.5823529 2.279125 99
## [4] {other vegetables,
## butter} => {whole milk} 0.01148958 0.5736041 2.244885 113
## [5] {tropical fruit,
## root vegetables} => {whole milk} 0.01199797 0.5700483 2.230969 118
## [6] {root vegetables,
## yogurt} => {whole milk} 0.01453991 0.5629921 2.203354 143
## [7] {other vegetables,
## domestic eggs} => {whole milk} 0.01230300 0.5525114 2.162336 121
## [8] {yogurt,
## whipped/sour cream} => {whole milk} 0.01087951 0.5245098 2.052747 107
## [9] {root vegetables,
## rolls/buns} => {whole milk} 0.01270971 0.5230126 2.046888 125
## [10] {pip fruit,
## other vegetables} => {whole milk} 0.01352313 0.5175097 2.025351 133
## [11] {tropical fruit,
## yogurt} => {whole milk} 0.01514997 0.5173611 2.024770 149
## [12] {other vegetables,
## yogurt} => {whole milk} 0.02226741 0.5128806 2.007235 219
## [13] {other vegetables,
## whipped/sour cream} => {whole milk} 0.01464159 0.5070423 1.984385 144
## [14] {root vegetables,
## rolls/buns} => {other vegetables} 0.01220132 0.5020921 2.594890 120
## [15] {root vegetables,
## yogurt} => {other vegetables} 0.01291307 0.5000000 2.584078 127
## [16] {other vegetables,
## fruit/vegetable juice} => {whole milk} 0.01047280 0.4975845 1.947371 103
## [17] {butter} => {whole milk} 0.02755465 0.4972477 1.946053 271
## [18] {curd} => {whole milk} 0.02613116 0.4904580 1.919481 257
## [19] {yogurt,
## whipped/sour cream} => {other vegetables} 0.01016777 0.4901961 2.533410 100
## [20] {root vegetables,
## other vegetables} => {whole milk} 0.02318251 0.4892704 1.914833 228
## [21] {tropical fruit,
## other vegetables} => {whole milk} 0.01708185 0.4759207 1.862587 168
## [22] {citrus fruit,
## yogurt} => {whole milk} 0.01026945 0.4741784 1.855768 101
## [23] {root vegetables,
## whole milk} => {other vegetables} 0.02318251 0.4740125 2.449770 228
## [24] {domestic eggs} => {whole milk} 0.02999492 0.4727564 1.850203 295
## [25] {pork,
## other vegetables} => {whole milk} 0.01016777 0.4694836 1.837394 100
## [26] {other vegetables,
## pastry} => {whole milk} 0.01057448 0.4684685 1.833421 104
## [27] {onions} => {other vegetables} 0.01423488 0.4590164 2.372268 140
## [28] {pork,
## whole milk} => {other vegetables} 0.01016777 0.4587156 2.370714 100
## [29] {whole milk,
## whipped/sour cream} => {other vegetables} 0.01464159 0.4542587 2.347679 144
## [30] {yogurt,
## rolls/buns} => {whole milk} 0.01555669 0.4526627 1.771563 153
## [31] {citrus fruit,
## other vegetables} => {whole milk} 0.01301474 0.4507042 1.763898 128
## [32] {whipped/sour cream} => {whole milk} 0.03223183 0.4496454 1.759754 317
## [33] {pip fruit,
## whole milk} => {other vegetables} 0.01352313 0.4493243 2.322178 133
## [34] {root vegetables} => {whole milk} 0.04890696 0.4486940 1.756031 481
## [35] {tropical fruit,
## rolls/buns} => {whole milk} 0.01098119 0.4462810 1.746587 108
## [36] {sugar} => {whole milk} 0.01504830 0.4444444 1.739400 148
## [37] {hamburger meat} => {whole milk} 0.01474326 0.4434251 1.735410 145
## [38] {ham} => {whole milk} 0.01148958 0.4414062 1.727509 113
## [39] {sliced cheese} => {whole milk} 0.01077783 0.4398340 1.721356 106
## [40] {root vegetables} => {other vegetables} 0.04738180 0.4347015 2.246605 466
## [41] {other vegetables,
## bottled water} => {whole milk} 0.01077783 0.4344262 1.700192 106
## [42] {citrus fruit,
## whole milk} => {other vegetables} 0.01301474 0.4266667 2.205080 128
## [43] {other vegetables,
## soda} => {whole milk} 0.01392984 0.4254658 1.665124 137
## [44] {frozen vegetables} => {whole milk} 0.02043721 0.4249471 1.663094 201
## [45] {tropical fruit,
## yogurt} => {other vegetables} 0.01230300 0.4201389 2.171343 121
## [46] {other vegetables,
## rolls/buns} => {whole milk} 0.01789527 0.4200477 1.643919 176
## [47] {chicken} => {other vegetables} 0.01789527 0.4170616 2.155439 176
## [48] {whole milk,
## butter} => {other vegetables} 0.01148958 0.4169742 2.154987 113
## [49] {hamburger meat} => {other vegetables} 0.01382816 0.4159021 2.149447 136
## [50] {cream cheese } => {whole milk} 0.01647178 0.4153846 1.625670 162
## [51] {butter milk} => {whole milk} 0.01159126 0.4145455 1.622385 114
## [52] {margarine} => {whole milk} 0.02419929 0.4131944 1.617098 238
## [53] {hard cheese} => {whole milk} 0.01006609 0.4107884 1.607682 99
## [54] {whole milk,
## domestic eggs} => {other vegetables} 0.01230300 0.4101695 2.119820 121
## [55] {chicken} => {whole milk} 0.01759024 0.4099526 1.604411 173
## [56] {white bread} => {whole milk} 0.01708185 0.4057971 1.588147 168
## [57] {beef} => {whole milk} 0.02125064 0.4050388 1.585180 209
## [58] {tropical fruit,
## whole milk} => {other vegetables} 0.01708185 0.4038462 2.087140 168
## [59] {tropical fruit} => {whole milk} 0.04229792 0.4031008 1.577595 416
## [60] {whipped/sour cream} => {other vegetables} 0.02887646 0.4028369 2.081924 284
## [61] {oil} => {whole milk} 0.01128622 0.4021739 1.573968 111
## [62] {yogurt} => {whole milk} 0.05602440 0.4016035 1.571735 551
##sorted by confidence
inspect(sort(subset(gro, subset=confidence > 5), by="confidence"))
## Sorted by confidence in accending order
inspect(sort(subset(gro, subset=confidence > 5), by="lift"))
According to the inspections, citrus fruit and root vegetables, and tropical fruit and root vegetables had highest confidence and lift. So those products are tend to bought in together.