Machine Learning with R Cookbook - Second Edition

How to do it...

Perform the following steps to create transactions with temporal information:

1. First, you need to install and load the arulesSequences package:

        > install.packages("arulesSequences")
        > library(arulesSequences)  

2. You can first create a list with purchasing records:

    > tmp_data=list(c("A"),
    +                c("A","B","C"),
    +                c("A","C"),
    +                c("D"),
    +                c("C","F"),
    +                c("A","D"),
    +                c("C"),
    +                c("B","C"),
    +                c("A","E"),
    +                c("E","F"),
    +                c("A","B"),
    +                c("D","F"),
    +                c("C"),
    +                c("B"),
    +                c("E"),
    +                c("G"),
    +                c("A","F"),
    +                c("C"),
    +                c("B"),
    +                c("C"))  

3. You can then turn the list into transactions and add temporal information:

 > names(tmp_data) = paste("Tr",c(1:20), sep = "") > trans = as(tmp_data,"transactions") > transactionInfo(trans)$sequenceID=c(1,1,1,1,1,2,2,2,2,3,3,3,3,3,4 ...