Implementing an operator
How could one implement a custom operator (e.g. a fuzzy ARTMAP classifier) and further add it to the operators group in RapidMiner? I guess that it should be implemented in Java, by deriving some specific classes/implementing RM interfaces. Where could I find such an example or (better) documentation in this subject?
Later edit: after digging the web, it seems that for RM 5 the white paper (http://rapid-i.com/component/page,shop.product_details/product_id,52/flypage,flypage.tpl/pop,0/option,com_virtuemart/Itemid,180/vmcchk,1/) is the authoritative resource. The RapidMiner 4.6 document contains a section dedicated to this area. Is this section deprecated/outdated? I intend to ask to my students to implement some ML-based models and integrate them into RM. At first glance, Weka seems to be more easily extended with custom models.