Probabilistic information retrieval based on differential latent semantic space
US6654740B2 · kind B2 · utility
316Cited by
5References
11Claims
0Family size
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Key dates
| Filing date | May 8, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | May 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99936
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-based information search and retrieval system and method for retrieving textual digital objects that makes full use of the projections of the documents onto both the reduced document space characterized by the singular value decomposition-based latent semantic structure and its orthogonal space. The resulting system and method has increased robustness, improving the instability of the traditional keyword search engine due to synonymy and/or polysemy of a natural language, and therefore is particularly suitable for web document searching over a distributed computer network such as the Internet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.