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Hi Im getting the following error when using SMOTE upsampling with decision trees

20160041

Exception: java.lang.RuntimeException
Message: Cannot build average for different positive classes (At Risk/Good Standing).
Stack trace:
com.rapidminer.operator.performance.BinaryClassificationPerformance.buildSingleAverage(BinaryClassificationPerformance.java:395)
com.rapidminer.tools.math.Averagable.buildAverage(Averagable.java:137)
com.rapidminer.tools.math.AverageVector.buildAverages(AverageVector.java:131)
com.rapidminer.extension.concurrency.operator.validation.CrossValidationOperator.doWork(CrossValidationOperator.java:303)
com.rapidminer.operator.Operator.execute(Operator.java:1026)
com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:77)
com.rapidminer.operator.ExecutionUnit$2.run(ExecutionUnit.java:812)
com.rapidminer.operator.ExecutionUnit$2.run(ExecutionUnit.java:807)
java.security.AccessController.doPrivileged(Native Method)
com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:807)
com.rapidminer.operator.OperatorChain.doWork(OperatorChain.java:423)
com.rapidminer.operator.Operator.execute(Operator.java:1026)
com.rapidminer.Process.executeRoot(Process.java:1386)
com.rapidminer.Process.execute(Process.java:1327)
com.rapidminer.Process.run(Process.java:1300)
com.rapidminer.Process.run(Process.java:1186)
com.rapidminer.Process.run(Process.java:1139)
com.rapidminer.Process.run(Process.java:1134)
com.rapidminer.Process.run(Process.java:1124)
com.rapidminer.gui.ProcessThread.run(ProcessThread.java:65)

Please advise.
Thank you

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MartinLiebig

Hi,

can you please check with a break point if the data set contains positive and negative examples after upsampling?

BR,

Martin

20160041

No there are no positive or negative samples. The target label is binominal and contains 2 classes 'At Risk' and 'Good Standing'
Appreciate your support

MartinLiebig

Hi,
thats usually ment by "positive' and "negative". Did you check that you have enough At Risk and Standing examples?
BR,
Martin

20160041

The dataset consists of 2018 examples (rows)

20160041

Can you please let me know if there is a fix for the SMOTE operator?

sgenzer

hi @20160041 can you please share your data set and XML? This is really the only way we can help you further. Thanks.

Scott