ISCA Archive Eurospeech 1999
ISCA Archive Eurospeech 1999

Variable preselection list length estimation using neural networks in a telephone speech hypothesis-verification system

J. Macías-Guarasa, J. Ferreiros, A. Gallardo, R. San-Segundo, Juan Manuel Pardo, L. Villarrubia

At ICSLP’98 we presented some preliminary results on automatic preselection list length estimation using parametric and non-parametric techniques, for a flexible large and very large vocabulary, speaker independent, isolated-word hypothesis generation system in a telephone environment, with vocabularies of up to 10000 words. In the baseline system, the preselection module generates a fixed-length list of candidate words, to be given to the verification stage. Our idea is making this length variable, depending on any known-in-advance system parameter, to allow decreasing computational demands. In this paper we present a novel approach to preselection list length estimation. A neural network is used to give an initial estimate of the required length, which is further processed to obtain a final value. The key factor to evaluate different methods is calculating the average preselection list length (effort) while keeping the required error rate.


doi: 10.21437/Eurospeech.1999-77

Cite as: Macías-Guarasa, J., Ferreiros, J., Gallardo, A., San-Segundo, R., Pardo, J.M., Villarrubia, L. (1999) Variable preselection list length estimation using neural networks in a telephone speech hypothesis-verification system. Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999), 295-298, doi: 10.21437/Eurospeech.1999-77

@inproceedings{maciasguarasa99_eurospeech,
  author={J. Macías-Guarasa and J. Ferreiros and A. Gallardo and R. San-Segundo and Juan Manuel Pardo and L. Villarrubia},
  title={{Variable preselection list length estimation using neural networks in a telephone speech hypothesis-verification system}},
  year=1999,
  booktitle={Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999)},
  pages={295--298},
  doi={10.21437/Eurospeech.1999-77}
}