What's the best open-source Java Bayesian spam filter library? [closed]

Answer 1

Another new library is ci-bayes, nice and very simple to use.

disclaimer: I have submitted a patches to this project and am currently a committer

Answer 2

You could also have a look at the still very new Apache Mahout project.

Answer 3

Weka is awesome, but Classifier4J is probably closer to what you want, since it's more aimed at text recognition.