Effect of pronunciations on OOV queries in spoken term detection
Name
Can-2009-Effect of pronunciations on OOV queries in spoken term detection.pdf
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Author(s)
Can, Dogan
Cooper, Erica
Sethy, Abhinav
White, Chris
Ramabhadran, Bhuvana
Saraclar, Murat
Date Issued
May 2009
Journal
Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, 2009
Publisher
Institute of Electrical and Electronics Engineers
Citation
Can, D. et al. “Effect of pronounciations on OOV queries in spoken term detection.” Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on. 2009. 3957-3960. Can, D. et al. “Effect of pronounciations on OOV queries in spoken term detection.” Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on. 2009. 3957-3960. © Copyright 2009 IEEE
Version
Final published version
Abstract
The spoken term detection (STD) task aims to return relevant segments from a spoken archive that contain the query terms whether or not they are in the system vocabulary. This paper focuses on pronunciation modeling for out-of-vocabulary (OOV) terms which frequently occur in STD queries. The STD system described in this paper indexes word-level and sub-word level lattices or confusion networks produced by an LVCSR system using weighted finite state transducers (WFST).We investigate the inclusion of n-best pronunciation variants for OOV terms (obtained from letter-to-sound rules) into the search and present the results obtained by indexing confusion networks as well as lattices. The following observations are worth mentioning: phone indexes generated from sub-words represent OOVs well and too many variants for the OOV terms degrade performance if pronunciations are not weighted.
Subjects
Weighted Finite State Transducers
Spoken Term Detection
Speech Recognition
Speech Indexing and Retrieval
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/ICASSP.2009.4960494
