"Is clustering and Decision Tree supposed to take hours to process?"
I'm on a tight schedule and using Rapidminer for the first time. At the moment I have been running Agglomerative Clustering for over 5 hours and I'm not sure if I should just let it run still or if there is something wrong and I'm just wasting my time. My exampleset has 241762 examples and 25 attributes, most of which are polynominal. I ran into the same problem when trying to create a Decision Tree, but I just killed that process after 5 hours.