Weka Predictor Error

KNIME Extensions Text Processing
#1

Hi,

I'm a student and I've just started using Knime. I've tried to make a sentiment analysis model using a MultiClassClassifier and a Weka Predictor, however a minute after the process starts I get an error saying: 'Cannot handle numeric class' and I really don't understand why this is happening. Any ideas or suggestions would be appreciated.

Thank you.

Regards,

IB

#2

Hi ib381,

this is difficult to tell without seeing your workflow.

Weka nodes do need the exact columns as specified in the dialog. A multiclassclassfier can only predict categorical class columns and no numerical ones. You can convert them with the Number to String node.

Hope this helps,

Iris