Hi,

Should the KNIME Decision Tree Learner and Decision Tree Predictor work with boolean variables?

I have a dataset in which all input variables (except one ID String) and the output/target/class variable are all boolean (type = BooleanCell).

The Decision Tree Learner does appear to create a proper tree model.  Though I'm guessing it is not treating the boolean values as boolean, but as the string values "false" and "true".  When I try to run that model and the same data through a Decision Tree Predictor, I get the following error messages:

ERROR DecTreePredictorNodeModel Decision Tree evaluation failed: For input string: "false"
ERROR Decision Tree Predictor Execute failed: For input string: "false"

-- Randy Kerber

Kavaii Analytics

San Jose, California