Document expansion in speech retrieval
US7113910B1 · kind B1 · utility
15Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Aug 21, 2023 |
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.