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Citace

Kolář, J. and Müller, L. : The Application of Bayesian Information Criterion in Acoustic Model Refinement . Proc. ECMS 2003, p. 44-48, Liberec , 2003.

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Abstrakt

Automatic speech recognition (ASR) systems usually consist of an acoustic model and a language model. This paper describes a technique of an efficient deployment of the acoustic model parameters. The acoustic model typically utilizes Continuous Density Hidden Markov Models (CDHMM). The output probability of a particular CDHMM state is represented by a Gaussian mixture density with a diagonal covariance structure. Usually, the output probability density function of each CDHMM state contains the same number of mixture components although a different number of components in individual states may yield more accurate recognition results, especially for low-resource ASR systems. The central idea is to assign more components to states where it is effective and less components to states where the increasing number of components is not warranting a significantly better description of the training data. The number of mixture components for a particular CDHMM state is chosen by optimizing the Bayesian Information Criterion (BIC).

Detail publikace

Název: The Application of Bayesian Information Criterion in Acoustic Model Refinement
Autor: Kolář, J. ; Müller, L.
Jazyk publikace: anglicky
Datum vydání: 2.6.2003
Rok vydání: 2003
Typ publikace: Stať ve sborníku
Název knihy: Proc. ECMS 2003
Strana: 44 - 48
ISBN: 807083708X
Místo vydání: Liberec
Datum: 2.6.2003 - 4.6.2003
/ 2009-05-13 11:14:37 /

Klíčová slova

Bayesian information criterion, acoustic modeling, hidden Markov models, automatic speech recognition

BibTeX

@INPROCEEDINGS{KolarJ_2003_TheApplicationof,
 author = {Kol\'{a}\v{r}, J. and M\"{u}ller, L.},
 title = {The Application of Bayesian Information Criterion in Acoustic Model Refinement},
 year = {2003},
 address = {Liberec },
 pages = {44-48},
 booktitle = {Proc. ECMS 2003},
 ISBN = {807083708X     },
 url = {http://www.kky.zcu.cz/en/publications/KolarJ_2003_TheApplicationof},
}