Time for action

To enhance your knowledge about this chapter, here are some practice questions that'll let you understand the concepts better:

  • Write an R program to find how many unique items' names are contained in the given sample market basket transaction file. Map each item's name to a unique integer ID. Find out all the closed frequent itemsets. Find out all the maximal frequent itemsets and their support count. Set a support count threshold to various values yourself.
  • Write an R program to implement the A-PrioriTid algorithm.
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