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This assignment looks at retail data supplied by an anonymous Belgian retail supermarket store. The data are collected over three non-consecutive periods. This results in approximately 5 months of data. The total amount of receipts being collected equals 88,162. Over the entire data collection period, the supermarket store carries 16,470 unique SKU’s (Stock Keeping Units). In total, 5,133 customers have purchased at least one product in the supermarket during the data collection period.
1- Install and load in the arules library.
2- Load in the data using the following command:
retail <- read.transactions(file.choose(), sep = " ")
3- Create a summary of this data (hint: summary(retail)). What does this summary indicate?
4- Create a frequency plot of the top 20 items. What do you learn in this?
5- Create rules around a support of 1% and confidence of 25%. Provide the summary of the rules.
6- Provide a snapshot of the rules sorting by lift, and then by confidence.
7- Provide a plot of the top 10 rules (hint: try the graph in the lesson, or this one:
plot(head(sort(<what you named your rules>),10), method = "graph", control = list(type ="items"))
8 - Target a specific product (you choose, although items 39 or 110 might be on interest), and show your top rules for that product.
9- Provide a final summary of your findings.

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# This assignment looks at retail data supplied by an anonymous Belgian retail supermarket store. The data are collected over three non-consecutive periods. This results in approximately 5 months of data. The total amount of receipts being collected equals 88,162. Over the entire data collection period, the supermarket store carries 16,470 unique SKUs (Stock Keeping Units). In total, 5,133 customers have purchased at least one product in the supermarket during the data collection period.

# 1- Install and load in the arules library.
library("arules")
library("arulesViz")
# 2- Load in the data using the following command:
retail <- read.transactions("retail.dat")

# 3- Create a summary of this data (hint: summary(retail)). What does this summary indicate?
summary(retail)
## transactions as itemMatrix in sparse format with
## 88162 rows (elements/itemsets/transactions) and
## 16470 columns (items) and a density of 0.0006257289
##
## most frequent items:
##      39      48      38      32      41 (Other)
##   50675   42135   15596   15167   14945 770058
##
## element (itemset/transaction) length distribution:
## sizes
##    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15
## 3016 5516 6919 7210 6814 6163 5746 5143 4660 4086 3751 3285 2866 2620 2310
##   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
## 2115 1874 1645 1469 1290 1205 981 887 819 684 586 582 472 480 355
##   31   32   33   34   35   36   37   38   39   40   41   42   43   44   45
## 310 303 272 234 194 136 153 123 115 112   76   66   71   60   50
##   46   47   48   49   50   51   52   53   54   55   56   57   58   59   60
##   44   37   37   33   22   24   21   21   10   11   10    9   11    4    9
##   61   62   63   64   65   66   67   68   71   73   74   76
##    7    4    5    2    2    5    3    3    1    1    1    1
##
##    Min. 1st Qu. Median    Mean 3rd Qu.    Max.
##    1.00    4.00    8.00   10.31   14.00   76.00...

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