DocumentCode
1065305
Title
Improvements in beam search for 10000-word continuous-speech recognition
Author
Haeb-Umbach, Reinhold ; Ney, Hermann
Author_Institution
Philips GmbH Forschungslab., Aachen, Germany
Volume
2
Issue
2
fYear
1994
fDate
4/1/1994 12:00:00 AM
Firstpage
353
Lastpage
356
Abstract
The authors describe the improvements in a time-synchronous beam search strategy for a 10000-word continuous-speech recognition task. Basically they introduced two measures, namely a tree organization of the pronunciation lexicon and a novel look-ahead technique at the phoneme level. The experimental tests performed showed that the number of state hypotheses could be reduced from 50000 to 3000, i.e., by a factor of about 17. At the same time, the word error rate did not increase
Keywords
search problems; speech recognition; continuous-speech recognition; experimental tests; look-ahead technique; phoneme; pronunciation lexicon; state hypotheses; time-synchronous beam search; tree organization; word error; Costs; Decoding; Error analysis; Hidden Markov models; Performance evaluation; Search problems; Space technology; Speech recognition; Testing; Vocabulary;
fLanguage
English
Journal_Title
Speech and Audio Processing, IEEE Transactions on
Publisher
ieee
ISSN
1063-6676
Type
jour
DOI
10.1109/89.279287
Filename
279287
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