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I need a library for naïve Bayes large scale, with millions of training examples and +100k binary features. It must be an online version (updatable after training). I also need top-k output, that is multiple classifications for a single instance. Accuracy is not very important.
The purpose is an automatic text categorization application.
Any suggestions for a good library is very appreciated.
EDIT: The library should preferably be in Java.
If a learning algorithm other than naïve Bayes is also acceptable, then check out Vowpal Wabbit (C++), which has the reputation of being one of the best scalable text classification algorithms (online stochastic gradient descent + LDA). I’m not sure if it does top-K output.