NLTK, the Natural Language Toolkit, is a suite of open source Python modules, data sets and tutorials supporting research and development in Natural Language Processing. A substantial amount of documentation about how to use NLTK, including a textbook and API documentation, is available from the NLTK website: http://www.nltk.org/ By default not all the packages that can be used with NLTK have been installed. It is recommended to manually install these. This can be accomplished by issuing the following commands from the Python interpreter: >>> import nltk >>> nltk.download()
WWW: http://www.nltk.org/
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