Topic modeling packages

1) MALLET: http://mallet.cs.umass.edu/
2) TMT: http://nlp.stanford.edu/software/tmt/tmt-0.4/
3) GENSIM: http://radimrehurek.com/gensim/index.html

Topic modeling toolkit

MALLET: http://mallet.cs.umass.edu/
A famous tool supporting various algorithms in exploring latent topics in raw texts.

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Cheers,
Vu