apache/incubator-spark — pull request #525 by cdgore (2014-01-30 06:51:11+00:00)
Title: Basic multi-class classification changes

* Created a new classification model for models intended to have multiple classes represented as Strings
* Added Class Label Point and corresponding methods for loading and storing in MLUtils
* Modified Naive Bayes to use this multi-class classification since that is the usual use case of Naive Bayes. This should save some effort if you want to use arbitrary class labels