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In linguistics, X-bar theory is a theory of syntactic category formation that was first proposed by Chomsky (1970) and further developed by Jackendoff (1977), along the lines of the theory of generative grammar put forth in the 1950s by Noam Chomsky. It attempts to capture the structure of phrasal categories with a single uniform structure called the X-bar schema, basing itself on the assumption that any phrase in natural language is an XP that is headed by a given syntactic category X. It played a significant role in resolving issues that phrase structure rules had, representative of which is the proliferation of grammatical rules, which is against the thesis of generative grammar.
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Semantic parsing is the task of converting a natural language utterance to a logical form: a machine-understandable representation of its meaning. Semantic parsing can thus be understood as extracting the precise meaning of an utterance. Applications of semantic parsing include machine translation, question answering, ontology induction, automated reasoning, and code generation. The phrase was first used in the 1970s by Yorick Wilks as the basis for machine translation programs working with only semantic representations.
References
- ↑ Cutler, Anne; Ladd, D. Robert; Brown, Gillian (1983-01-01). Prosody: models and measurements. Springer-Verlag. ISBN 9783540124283.
- ↑ Meeting, Association for Computational Linguistics (1997-01-01). Proceedings of the Conference. Association for Computational Linguistics.
- ↑ Susan Armstrong (1994) Using Large Corpora, ISBN 0-262-51082-0, p. 149
- ↑ ON THE TRAIL OF "THE NEW BLACK" (AND "THE NAVY BLUE"), Language Log , December 28, 2006
- ↑ Becker, Joseph D. (1975). "The phrasal lexicon". Proceedings of the 1975 workshop on Theoretical issues in natural language processing - TINLAP '75. p. 60. doi:10.3115/980190.980212. S2CID 3919430.
- ↑ Kukich, Karen (1983). Knowledge-based report generation: a knowledge-engineering approach to natural language report generation. OCLC 12074611.[ page needed ]
- ↑ Bourbeau, L.; Carcagno, D.; Goldberg, E.; Kittredge, R.; Polguère, A. (1990). "Bilingual generation of weather forecasts in an operations environment". Proceedings of the 13th conference on Computational linguistics -. 1. pp. 90–92. doi:10.3115/992507.992527. ISBN 9529020287. S2CID 52871604.