Data processing: speech signal processing – linguistics – language – Linguistics – Natural language
Reexamination Certificate
2002-07-12
2009-02-17
Hudspeth, David R (Department: 2626)
Data processing: speech signal processing, linguistics, language
Linguistics
Natural language
C704S010000, C706S046000, C707S793000
Reexamination Certificate
active
07493253
ABSTRACT:
A Natural Language Understanding system is provided for indexing of free text documents. The system according to the invention utilizes typographical and functional segmentation of text to identify those portions of free text that carry meaning. The system then uses words and multi-word terms and phrases identified in the free to text to identify concepts in the free text. The system uses a lexicon of terms linked to a formal ontology that is independent of a specific language to extract concepts from the free text based on the words and multi-word terms in the free text. The formal ontology contains both language independent domain knowledge concepts and language dependent linguistic concepts that govern the relationships between concepts and contain the rules about how language works. The system according to the current invention may preferably be used to index medical documents and assign codes from independent coding systems, such as, SNOMED, ICD-9 and ICD-10. The system according to the current invention may also preferably make use of syntactic parsing to improve the efficiency of the method.
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Ceusters Werner
Coppens Frederik
Montyne Frank
O'Donnell Mick
Van Mol Maarten
Hudspeth David R
Language and Computing, Inc.
Sked Matthew J.
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