Automatic retraining of a speech recognizer while using reliable transcripts
US6374221B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jun 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/0635
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Automatic retraining of a speech recognizer during its normal operation in conjunction with an electronic device responsive to the speech recognizer is addressed. In this retraining, stored trained models are retrained on the basis of recognized user utterances. Feature vectors, model state transitions, and tentative recognition results are stored upon processing and evaluation of speech samples of the user utterances. A reliable transcript is determined for later adaptation of a speech model, in dependence upon the user's successive behavior when interacting with the speech recognizer and the electronic device. For example, in a name dialing process, such a behavior can be manual or voice re-dialing of the same number or dialing of a different phone number, immediately aborting an established communication, or braking it after a short period of time. In dependence upon such a behavior, a transcript is select in correspondence to a user's first utterance or in correspondence to a user's second utterance, or both, or the tentative recognition result (or results) are determined to be uncertain and deemed not to be suitable for updating a model, or updating is performed with appropria…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.