"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
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