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Discriminative utterance verification using minimum string verification error (MSVE) training

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4 Author(s)
Rahim, M.G. ; AT&T Bell Labs., Murray Hill, NJ, USA ; Chin-Hui Lee ; Biing-Hwang Juang ; Wu Chou

This paper focuses on one aspect of achieving flexible speech recognition, namely, improving the ability to cope with naturally spoken utterances through discriminative utterance verification. We propose an algorithm for training utterance verification systems based on the minimum verification error (MVE) training framework. Experimental results on speaker-independent connected digits, show a significant improvement in verification accuracy when the discriminant function used in MVE training is made consistent with the confidence measure used in utterance verification. At a 10% rejection rate, for example, the new proposed method reduces the string error rate by a further 22.7% over our previously reported results in which the MVE based discriminative training was not incorporated

Published in:

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on  (Volume:6 )

Date of Conference:

7-10 May 1996