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RapidMiner supports Meta Learning by embedding one or several basic learners as children into a parent meta learning operator. In this example we generate a data set with the ExampleSetGenerator operator and apply an improved version of Stacking on this data set. The Stacking operator contains four inner operators, the first one is the learner which should learn the stacked model from the predictions of the other four child operators (base learners). Other meta learning schemes like Boosting ...