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Natural Language Toolkit (NLTK) www.nltk.org

Authors

Copyright (C) 2001-2012 NLTK Project

For license information, see LICENSE.txt

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.

Documentation

A substantial amount of documentation about NLTK is available:

  • The NLTK website has information about the NLTK community.

  • The NLTK Book covers a wide range of introductory topics in NLP, and shows how to do all the processing tasks using the toolkit.

  • The API Documentation describes every module, interface, class, method, function, and variable in the toolkit.

Mailing Lists

There are several mailing lists associated with NLTK:

  • nltk: Public information and announcements about NLTK (very low volume).
  • nltk-users: Discussions amongst NLTK users.
  • nltk-dev: Discussions amongst NLTK developers.
  • nltk-translation: Discussions about translating the NLTK book.
  • nltk-commits: Subversion commit logs for NLTK.

Contributing

If you would like to contribute to NLTK, please see http://www.nltk.org/contribute

Donating

Have you found the toolkit helpful? Please support NLTK development by donating to the project via PayPal, using the link on the NLTK homepage.

Redistributing

NLTK source code is distributed under the Apache 2.0 License.
NLTK documentation is distributed under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States license.
NLTK corpora are provided under the terms given in the README file for each corpus; all are redistributable, and available for non-commercial use.
NLTK may be freely redistributed, subject to the provisions of these licenses.

Citing

If you publish work that uses NLTK, please cite the NLTK book, as follows:

Bird, Steven, Edward Loper and Ewan Klein (2009).
Natural Language Processing with Python.  O'Reilly Media Inc.

Packages

No packages published

Languages

  • Python 84.1%
  • Emacs Lisp 15.2%
  • Java 0.7%