Hi Igniters, I suggest to add and implement by myself sequential pipeline of machine learning operations including all preprocessing stages like Pipeline object in Python library scikit-learn (look here http://scikit-learn.org/stable/modules/generated/sklearn.pipeline.Pipeline.html for the details)
It can be combined with current Cross-Validator and Evaluator objects. The possible solution will sequentially apply a list of transforms and a final estimator. Alexey
