Document expansion in speech retrieval
US7395207B1 · kind B1 · utility
1Cited by
2References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 24, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Aug 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/685
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods of document expansion for a speech retrieval document by a recognizer. A database of vectors of automatic transcriptions of documents is accessed and the vectors are truncated by removing all terms that are not recognizable by the recognizer to create truncated vectors. Terms in the vectors are then weighted to associate the truncated vectors with the untruncated vectors. Terms not recognized by the recognizer are then added back to the weighted, truncated vectors. The retrieval effectiveness may then be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.