Nominal to Binominal: Attribute [0] {0=0} is not a classification attribute!

[alejandro.tobon]

Hello I am havving a problem,

When I try to use the Nominal to Binominal opperator, I am getting this error and I dont know what it means.

Message: Attribute [3]
{3=0} is not a classification attribute!

  com.rapidminer.example.table.PolynominalMapping.ensureClassification(PolynominalMapping.java:228)
  com.rapidminer.example.table.PolynominalMapping.getNegativeIndex(PolynominalMapping.java:156)
  com.rapidminer.example.table.PolynominalMapping.getNegativeString(PolynominalMapping.java:180)
  com.rapidminer.operator.preprocessing.filter.NominalToBinominalModel.applyOnData(NominalToBinominalModel.java:109)
  com.rapidminer.operator.preprocessing.PreprocessingModel.apply(PreprocessingModel.java:95)
  com.rapidminer.operator.preprocessing.PreprocessingOperator.apply(PreprocessingOperator.java:130)
  com.rapidminer.operator.AbstractExampleSetProcessing.doWork(AbstractExampleSetProcessing.java:116)
  com.rapidminer.operator.Operator.execute(Operator.java:829)
  com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:51)
  com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:709)
  com.rapidminer.operator.OperatorChain.doWork(OperatorChain.java:369)
  com.rapidminer.operator.Operator.execute(Operator.java:829)
  com.rapidminer.Process.run(Process.java:901)
  com.rapidminer.Process.run(Process.java:797)
  com.rapidminer.Process.run(Process.java:792)
  com.rapidminer.Process.run(Process.java:782)
  com.rapidminer.gui.ProcessThread.run(ProcessThread.java:62)

Pleas help.

Thanks
Alejandro

[Sebastian Land]

Hi,
I wonder if you were surprised that you didn't get a single answer? Asking a RapidMiner question in an empty board for RapidNet, didn't that look suspicious for you?

If you still want to have an answer to this question, please repost them in the normal RapidMiner Board.

Greetings,
 Sebastian

[meliniak]

i'm experiencing the same problem. anyone got any solution?