Pattern and speech recognition using accumulated partial scores from a posteriori odds, with pruning based on calculation amount
US5749069A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Mar 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/088
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A speech recognition apparatus includes a data input portion to which input data which is a speech pattern is applied, a score calculation portion calculating a score indicating a possibility of recognition of a partial pattern of the speech pattern based on the estimate of a posteriori odds, an optimization design portion designing optimized parameters for calculating the estimate of the a posteriori odds in the score calculation portion and/or optimized parameters of pruning functions controlling calculation amount in the pruning processing portion, a pruning processing portion pruning the score for making operation efficient, an accumulated score calculating portion accumulating pruned scores to calculate an accumulated score, a recognition result decision portion classifying input data for every class based on the accumulated score and deciding a recognition result, and a recognition result output portion providing the recognition result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.