I am working in implementing the association rule I read the arff file and get the data and then I put it in an array list But I do not know how to check through the items 1 itemsets, two itemsets,three itemsets.etc How can I calculate the average of those Itemsets together And also here in the algorithm when we build the three itemsets it is build above the two item sets So, how can I hold the last itemsets and then add the new one to them I mean, how can the program differentiate and be sure that each item is from different column.

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