Segment-based classes for language modeling within the field of CSR

Authors:
Raquel Justo;M. Inés Torres
Affiliations:
Dept. of Electricity and Electronics, University of the Basque Country, Spain;Dept. of Electricity and Electronics, University of the Basque Country, Spain
Venue:
CIARP'07 Proceedings of the Congress on pattern recognition 12th Iberoamerican conference on Progress in pattern recognition, image analysis and applications
Year:
2007

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Abstract

In this work, we propose and formulate two different approaches for the language model integrated in a Continuous Speech Recognition System. Both of them make use of class-based language models where classes are made up of segments or sequences of words. On the other hand, an interpolated model of a class-based language model and a word-based language model is explored as well. The experiments carried out over a spontaneous dialogue corpus in Spanish, demonstrate that introducing segments of words in a class-based language model a better performance of a Continuous Speech Recognition system can be achieved.