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Help! Closed/maximal frequent itemsets

tatianiiatatianiia Member Posts: 11 Contributor I
edited November 2018 in Help
Hi!

Is it possible to get only maximal or closed frequent itemsets in RapidMiner?

Thanks!

Answers

  • tatianiiatatianiia Member Posts: 11 Contributor I
    In other words, if FP-Growth output is:

    Item A Item B Item C
    Item A Item B

    I need to leave only Item A Item B Item C, since it is maximal.
  • tatianiiatatianiia Member Posts: 11 Contributor I
    Another try:)

    I have the following example:

                  Attr 1  Attr2  Attr 3  Attr 4  Attr 5
    Row 1    0        1        0          1        0
    Row 2    0        0        0          1       0
    Row 3    0        1        0          0        0

    I need to filter out Row 2 and Row 3, since {0,0,0,1,0} and {0,1,0,0,0} are subsets of the first row ({0,1,0,1,0}). So, as a results I should have only Row 1, since other two are redundant for me.

    I don't know how else to explain my problem:) I am sure that there is some simple solution for that.
    Thanks!

    P.S. Getting back to frequent itemsets - Maximal Frequent Itemsets is a frequent itemset for which none of its immediate supersets are frequent.
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