Probabilistic system for natural language processing
US6556964B2 · kind B2 · utility
98Cited by
4References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A natural language understanding system is described to provide generation of concept codes from free-text medical data. A probabilistic model of lexical semantics, is implemented by means of a Bayesian network, and is used to determine the most probable concept or meaning associated with a sentence or phrase. The inventive method and system includes the steps of checking for synonyms, checking spelling, performing syntactic parsing, transforming text to its “deep” or semantic form, and performing a semantic analysis based on a probabilistic model of lexical semantics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.