发明名称 |
ONTOLOGY-BASED PARSER FOR NATURAL LANGUAGE PROCESSING |
摘要 |
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. |
申请公布号 |
WO0235376(A2) |
申请公布日期 |
2002.05.02 |
申请号 |
WO2001US32636 |
申请日期 |
2001.10.26 |
申请人 |
SCIENCE APPLICATIONS INTERNATIONAL CORPORATION |
发明人 |
BUSCH, JUSTIN, ELIOT;LIN, ALBERT, DEIRCHOW;GRAYDON, PATRICK, JOHN;CAUDILL, MAUREEN |
分类号 |
G06F17/27 |
主分类号 |
G06F17/27 |
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