07027974 is referenced by 268 patents and cites 65 patents.

An ontology-based parser incorporates both a system and method for converting natural-language text into predicate-argument format that can be easily used by a variety of applications, including search engines, summarization applications, categorization applications, and word processors. The ontology-based parser contains functional components for receiving documents in a plurality of formats, tokenizing them into instances of concepts from an ontology, and assembling the resulting concepts into predicates. The ontological parser has two major functional elements, a sentence lexer and a parser. The sentence lexer takes a sentence and converts it into a sequence of ontological entities that are tagged with part-of-speech information. The parser converts the sequence of ontological entities into predicate structures using a two-stage process that analyzes the grammatical structure of the sentence, and then applies rules to it that bind arguments into predicates.

Title
Ontology-based parser for natural language processing
Application Number
9/697676
Publication Number
7027974 (B1)
Application Date
October 27, 2000
Publication Date
April 11, 2006
Inventor
Maureen Caudill
San Diego
CA, US
Patrick John Graydon
Windsor
CA, US
Albert Deirchow Lin
San Diego
CA, US
Justin Eliot Busch
Irvine
CA, US
Agent
Banner & Witcoff
Assignee
Science Applications International Corporation
CA, US
IPC
G10L 13/08
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