Hi,
I am trying to use CRUpdateable for Multi target regression, and I found the CRUpdateable 's default classifier is HoeffdingTree, but when I call method as buildClassifier, it gives me this error:

weka.core.UnsupportedAttributeTypeException: weka.classifiers.bayes.NaiveBayesUpdateable: Cannot handle numeric class!

my code is here 👍
CRUpdateable classifier = new CRUpdateable();
HoeffdingTree ht = new HoeffdingTree();
classifier.setClassifier(ht);
classifier.buildClassifier(trainingInstances);

If the HoeffdingTree is not for regression why it is default classifier in CRUpdateable, and if it is for regression why it doesn't work?

Thanks
Mali