Automatic speech recognition (ASR) processing using confidence m

Details Automatic speech recognition (ASR) processing using confidence m Automatic speech recognition (ASR) processing using confidence m

1993-10-27

1996-10-15

MacDonald, Allen R.

G10L 506

Patent

active

055662722

ABSTRACT:
The user interface in an automatic speech recognition (ASR) system is dynamically controlled, based upon the level of confidence in the results of the ASR process. In one embodiment, the system is arranged to distinguish error prone ASR interpretations from those likely to be correct, using a degree of confidence in the output of the ASR system determined as a function of the difference between the confidence in the "first choice" selected by the ASR system and the confidence in the "second choice" selected by the ASR system. In this embodiment, the user interface is arranged so that the explicit verification steps taken by the system as a result of uncertain information is different from the action taken when the confidence is high. In addition, different treatment can be provided based upon the "consequences" of misinterpretation as well as the historical performance of the system with respect to the specific user whose speech is being processed. In another embodiment, after an ASR system interprets an utterance, the confidence in the interpretation is assessed, and three different interactions with the user may then occur.

REFERENCES:
patent: 4827500 (1989-05-01), Binkerd et al.
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patent: 5033088 (1991-07-01), Shipman
patent: 5222146 (1993-06-01), Bahl et al.
patent: 5230023 (1993-07-01), Nalcano
patent: 5297183 (1994-03-01), Bareis et al.
K. P. Avila et al. "Recognition Index: A Statistical Approach to Vocabulary Diagnostics" Speech Technology, Oct.-Nov. 1987, vol. 4, No. 1, pp. 62-67.

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