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Phone deactivation pruning in large vocabulary continuous speech recognition

Research output: Contribution to journalArticlepeer-review

Original languageEnglish
Pages (from-to)4-6
Number of pages3
JournalIEEE Signal Processing Letters
Issue number1
Publication statusPublished - 1 Jan 1996


Introduces a new pruning strategy for large vocabulary continuous speech recognition based on direct estimates of local posterior phone probabilities. This approach is well suited to hybrid connectionist/hidden Markov model systems. Experiments on the Wall Street Journal task using a 20000 word vocabulary and a trigram language model have demonstrated that phone deactivation pruning can increase the speed of recognition-time search by up to a factor of 10, with a relative increase in error rate of less than 2%.

ID: 37432014