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"FPGrowth: parameter must_contain duplicates items."

Hi,

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,

Chatchawit

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land

Hi,
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.

Greetings,
Sebastian

u37cap

Thanks a lot.

Chatchawit