I've just released Classifier4J 0.6. This new release includes a rather nice (I think) new classifier (the VectorClassifer) based on the vector space search algorithm This particular classifier is fast, doesn't require training for non-matches and is very suitable for sorting data into various categories.

If you've looked at Classifier4J in the past and run into performance problems with the Bayesian algorithm I'd be interested in your feedback on this new algorithm.

Details are available from the Classifier4J website