"Bug when updating Weka Models with ModelUpdater"

When updating a model created with a Weka learner, such as W-NaiveBayesMultinomialUpdateable, only every second example is used. This is due to the following lines in the method updateClassifier in WekaClassifier.java (which is indeed a Rapidminer operator, responsible for calling the Weka learners from Rapidminer):

			for (int i = 0; i < instances.numInstances(); i++) {
				Instance instance = instances.instance(i++);
				classifier.updateClassifier(instance);
			}

You are incrementing the variable i two times. You should fix that in the next version of Rapidminer.

Kind regards,
Daniel