Natural Language Toolkit

Natural Language ToolkitOriginal author(s)| Steven Bird, Edward Loper, Ewan Klein

|

Developer(s)| Team NLTK
Initial release| 2001; 25 years ago (2001)[1]
Written in| Python
Type| Natural language processing
License| Apache 2.0[2]
Website| www.nltk.org
Parse tree generated with NLTK

The Natural Language Toolkit, or more commonly NLTK, is a suite of libraries and programs for symbolic and statistical natural language processing (NLP) for English written in the Python programming language. It supports classification, tokenization, stemming, tagging, parsing, and semantic reasoning functionalities.[3] It was developed by Steven Bird and Edward Loper in the Department of Computer and Information Science at the University of Pennsylvania.[4] NLTK includes graphical demonstrations and sample data. It is accompanied by a book that explains the underlying concepts behind the language processing tasks supported by the toolkit,[5] plus a cookbook.[6]

NLTK is intended to support research and teaching in NLP or closely related areas, including empirical linguistics, cognitive science, artificial intelligence, information retrieval, and machine learning.[7] NLTK has been used successfully as a teaching tool, as an individual study tool, and as a platform for prototyping and building research systems. There are 32 universities in the US and 25 countries using NLTK in their courses.

## Contents

* 1 Library highlights
* 2 See also
* 3 References
* 4 External links

## Library highlights

* Discourse representation[8]
* Lexical analysis: Word and text tokenizer
* n-gram and collocations
* Part-of-speech tagger
* Tree model and Text chunker for capturing
* Named-entity recognition

## See also

* SpaCy

## References

1. ↑ "Project site on SourceForge". 9 July 2001. http://sourceforge.net/projects/nltk/.
2. ↑ "NLTK License". NLTK Project. https://github.com/nltk/nltk/blob/develop/LICENSE.txt.
3. ↑ "NLTK Courses". https://docs.google.com/document/d/1eYubSwLkpB7ZgfQVxxAwgsmAqS__BRfbMyP9qV6ngD8/edit.
4. ↑ "Preface". http://www.nltk.org/book/ch00.html.
5. ↑ Bird, Steven; Klein, Ewan; Loper, Edward (2009). Natural Language Processing with Python. O'Reilly Media Inc. ISBN 978-0-596-51649-9.
6. ↑ Perkins, Jacob (2010). Python Text Processing with NLTK 2.0 Cookbook. Packt Publishing. ISBN 978-1849513609.
7. ↑ Bird, Steven; Klein, Ewan; Loper, Edward; Baldridge, Jason (2008). Multidisciplinary instruction with the Natural Language Toolkit. Proceedings of the Third Workshop on Issues in Teaching Computational Linguistics, ACL. http://aclweb.org/anthology-new/W/W08/W08-0208.pdf.
8. ↑ "NLTK :: Sample usage for drt". https://www.nltk.org/howto/drt.html.

## External links

* v
* t
* e

Natural language processing

General terms|

* Natural language understanding
* Text corpus
* Speech corpus
* Stopwords
* Bag-of-words
* AI-complete
* n-gram (Bigram, Trigram)

Text analysis|

* Text segmentation
* Part-of-speech tagging
* Text chunking
* Compound term processing
* Collocation extraction
* Stemming
* Lemmatisation
* Named-entity recognition
* Coreference resolution
* Sentiment analysis
* Concept mining
* Parsing
* Word-sense disambiguation
* Ontology learning
* Terminology extraction
* Textual entailment
* Truecasing

Automatic summarization|

* Multi-document summarization
* Sentence extraction
* Text simplification

Machine translation|

* Computer-assisted
* Example-based
* Rule-based
* Neural

Automatic identification
and data capture|

* Speech recognition
* Speech synthesis
* Optical character recognition
* Natural language generation

Topic model|

* Pachinko allocation
* Latent Dirichlet allocation
* Latent semantic analysis

Computer-assisted
reviewing|

* Automated essay scoring
* Concordancer
* Grammar checker
* Predictive text
* Spell checker
* Syntax guessing

Natural language
user interface|

* Automated online assistant
* Chatbot
* Interactive fiction
* Question answering
* Voice user interface

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Natural Language Toolkit. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Software:Natural_Language_Toolkit&oldid=675989"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template