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Which NLP framework do you use?

Just wondering what NLP framework people are using out there? I would like to extract Category/Sub-Categories and Topic information from unstructured text.

Thanks,

( 4 comments | 9 points | on HN )
Re:Which NLP framework do you use? by xerxes2001 on Saturday July 09, 2011 @11:29AM (#2745725)
I would like to know as well. At the moment I am doing most of my stuff with the tm library in R. NLTK in python also works nicely IMO.
Re:Which NLP framework do you use? by jdhok on Saturday July 09, 2011 @10:30AM (#2745625)
At my last job we used NLTK, Stanford NER and POS tagger, and some components from Lucene.
Re:Which NLP framework do you use? by szermer on Saturday July 09, 2011 @01:19AM (#2745078)
I'd be interested in knowing as well.
Re:Which NLP framework do you use? by ColinWright on Saturday July 09, 2011 @03:35AM (#2745252)
I'm curious. If you are interested and want to know the answer, why didn't you upvote the question?