A Toolkit for Recursive Partytioning

Description A toolkit with infrastructure for representing,summarizing, and visualizing tree-structured regression and classification models. This unified infrastructure can be used for reading/coercing tree models from different sources (rpart,RWeka, PMML) yielding objects that share functionality for print/plot/predict methods. (It will also be the basis for a re-implementation of the party package. Currently, only a re-implementation of ctree() is contained in the package.)