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