"FPGrowth: parameter must_contain duplicates items."

u37capu37cap Member Posts: 2 Contributor I
edited June 2019 in Help

I use RapidMiner 4.6.0, and I want to do FPGrowth with parameter "must_contain."

So I set must_contain to "geneexpression = dn" (gene expression can be either up or down).

A resulting item set contains both "geneexpression = up" and "geneexpression = dn" (at the rightmost).

Then the process dies at AssociationRuleGenerator. See the message below.

G Mar 19, 2010 9:38:20 PM: [Fatal] NullPointerException occured in 1st application of AssociationRuleGenerator (AssociationRuleGenerator)
G Mar 19, 2010 9:38:20 PM: [Fatal] Process failed: operator cannot be executed. Check the log messages...
         Root[1] (Process)
         +- Input[1] (ExampleSource)
         +- Nominal2Binominal[1] (Nominal2Binominal)
         +- FPGrowth[1] (FPGrowth)
here ==> +- AssociationRuleGenerator[1] (AssociationRuleGenerator)

Thank you for you help,



  • Options
    landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,531 Unicorn
    please update to RapidMiner 5.0 since we don't maintain the community version of RapidMiner 4.x anymore.
    If it still occurs, please send me the bug by pressing the send bug button when the error occurs.

  • Options
    u37capu37cap Member Posts: 2 Contributor I
    Thanks a lot.  :)

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