Subword unit posterior probability for measuring confidence
US7890325B2 · kind B2 · utility
11Cited by
11References
10Claims
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Key dates
| Filing date | Mar 16, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Apr 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/193
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Speech recognition such as command and control speech recognition generally use a context free grammar to constrain the decoding process. Word or subword background model are constructed to repopulate dynamic hypothesis space, especially when word spareness is at issue. The background models can be later used in speech recognition. During speech recognition, background and conventional context free grammar decoding are used to measure confidence. The discussion above is merely provided for general background information and is not intended to be used as an aid in determining the scope of the claimed subject matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.