Zero accuracy for Decision Tree

I am completely new to KNIME and have been trying to run some examples.

More specifically I tried to use the Decision tree for the "Iris" dataset and although I think I followed all the right steps in the end I get 0 accuracy. The same happens when I try Naive Bayes with another dataset. I know this sounds too vague, but I have no idea what I could be doing wrong. Could anyone help?

Thanks in advance.



Hi Dimitris.

on our example server you can find examples how to set up the decision tree or naive bayes workflows. e.g. here knime://EXAMPLES/002_DataMining/002001_DecisionTree

Best, Iris