conference paper
Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models
Xavier L.
Aubert
author
Reinhold
Haeb-Umbach
author 242
Hermann
Ney
author
54
department
Linear discriminant analysis (LDA) experiments reported previously (ICASSP-92 vol.1, p.13-16), are extended to context-dependent models and speaker-independent large vocabulary continuous speech recognition. Two variants of using mixture densities are compared: state-specific modeling and the monophone-tying approach where densities are shared across the states relevant to the same phoneme. Results are presented on the DARPA Resource Management (RM) task for both speaker-dependent (SD) and speaker-independent (SI) parts. Using triphone models based on LDA and continuous mixture densities, significant improvements have been observed and the following word error rates have been achieved: for the SD part, 7.8% without grammar and 1.5% with word pair; and for the SI part, 17.2% and 4.6%, respectively. These scores are averaged over 1200 SD or SI evaluation sentences and are among the best published so far on the RM database.
1993
eng
ICASSP, Minneapolis
X.L. Aubert, R. Haeb-Umbach, H. Ney, in: ICASSP, Minneapolis, 1993.
Aubert XL, Haeb-Umbach R, Ney H. Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models. In: <i>ICASSP, Minneapolis</i>. ; 1993.
Aubert, Xavier L., Reinhold Haeb-Umbach, and Hermann Ney. “Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models.” In <i>ICASSP, Minneapolis</i>, 1993.
@inproceedings{Aubert_Haeb-Umbach_Ney_1993, title={Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models}, booktitle={ICASSP, Minneapolis}, author={Aubert, Xavier L. and Haeb-Umbach, Reinhold and Ney, Hermann}, year={1993} }
Aubert, X. L., Haeb-Umbach, R., & Ney, H. (1993). Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models. In <i>ICASSP, Minneapolis</i>.
Aubert, Xavier L., et al. “Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models.” <i>ICASSP, Minneapolis</i>, 1993.
X. L. Aubert, R. Haeb-Umbach, and H. Ney, “Continuous Mixture Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models,” in <i>ICASSP, Minneapolis</i>, 1993.
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