A dependency parser analyzes the grammatical structure of a sentence, establishing relationships between "head" words and words which modify those heads.
Stanford CoreNLP provides a set of human language technology tools. It can give the base forms of words, their parts of speech, whether they are names of companies, people, etc., normalize dates, times, and numeric quantities, mark up the structure of sentences in terms of phrases and syntactic dependencies, indicate which noun phrases refer to the same entities, indicate sentiment, extract particular or open-class relations between entity mentions, get the quotes people said, etc.
D. Gibson, K. Punera, и A. Tomkins. WWW '05: Special interest tracks and posters of the 14th international conference on World Wide Web, стр. 830--839. New York, NY, USA, ACM Press, (2005)
E. Charniak. Proceedings of the First Conference of the North American Chapter of the Association for Computational Linguistics (NAACL 2000), April 29 - May 04, 2000, Seattle, Washington, стр. 132--139. Morgan Kaufmann Publishers, San Francisco, CA, USA, (2000)
D. McClosky, E. Charniak, и M. Johnson. ACL-44: Proceedings of the 21st International Conference on Computational Linguistics and the 44th annual meeting of the Association for Computational Linguistics, стр. 337--344. Morristown, NJ, USA, Association for Computational Linguistics, (2006)
R. Kate, и R. Mooney. Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Companion Volume, Short Papers, стр. 81--84. Rochester, New York, Association for Computational Linguistics, (апреля 2007)
R. Ge, и R. Mooney. Proceedings of the Ninth Conference on Computational Natural Language Learning (CoNLL-2005), стр. 9--16. Ann Arbor, Michigan, Association for Computational Linguistics, (июня 2005)
J. Nivre. Inquiries into Words, Constraints and Contexts. Festschrift in the Honour of Kimmo Koskenniemi on his 60th Birthday, CSLI Publications, Stanford, California, USA, (2005)
E. Charniak. Proceedings of the First Conference of the North American Chapter of the Association for Computational Linguistics (NAACL 2000), стр. 132--139. Seattle, Washington, Morgan Kaufmann Publishers, San Francisco, CA, USA, (апреля 2000)
M. de Marneffe, B. MacCartney, и C. Manning. Proceedings of the IEEE / ACL 2006 Workshop on Spoken Language Technology, The Stanford Natural Language Processing Group, (2006)