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Supertagging: Using Complex Lexical Descriptions in Natural...

Supertagging: Using Complex Lexical Descriptions in Natural Language Processing

Srinivas Bangalore, Aravind K. Joshi
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Investigations into employing statistical approaches with linguistically motivated representations and its impact on Natural Language processing tasks.
The last decade has seen computational implementations of large hand-crafted natural language grammars in formal frameworks such as Tree-Adjoining Grammar (TAG), Combinatory Categorical Grammar (CCG), Head-driven Phrase Structure Grammar (HPSG), and Lexical Functional Grammar (LFG). Grammars in these frameworks typically associate linguistically motivated rich descriptions (Supertags) with words. With the availability of parse-annotated corpora, grammars in the TAG and CCG frameworks have also been automatically extracted while maintaining the linguistic relevance of the extracted Supertags. In these frameworks, Supertags are designed so that complex linguistic constraints are localized to operate within the domain of those descriptions. While this localization increases local ambiguity, the process of disambiguation (Supertagging) provides a unique way of combining linguistic and statistical information. This volume investigates the theme of employing statistical approaches with linguistically motivated representations and its impact on Natural Language Processing tasks. In particular, the contributors describe research in which words are associated with Supertags that are the primitives of different grammar formalisms including Lexicalized Tree-Adjoining Grammar (LTAG).
Year:
2010
Publisher:
MIT Press
Language:
english
ISBN 10:
0262312484
ISBN 13:
9780262312486
File:
PDF, 6.42 MB
IPFS:
CID , CID Blake2b
english, 2010
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