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Paper Abstract and Keywords
Presentation 2010-12-21 11:05
Evaluation of Successive Rapid Hypothesis Determination Algorithm for Continuous Word Recognition
Hiroyuki Ohno (Nagoya Inst. of Tech.), Hiroshi Kojima (Nagoya Inst. of Tech/Hitachi Solutions, Ltd.), Yoshihiko Nankaku, Akinobu Lee, Keiichi Tokuda (Nagoya Inst. of Tech.) NLC2010-21 SP2010-94
Abstract (in Japanese) (See Japanese page) 
(in English) Minimizing response delay of speech recognition system and giving rapid feed backs are important properties for an intuitive, easy-to-use speech interfaces. Many studies has been conducted to improve the response delay, such as making progressive outputs while recognition process "after" the words are half-determined in the context. In order to achieve higher speed input responses, we have proposed an algorithm to determine the most likely hypothesis "before" the utterance ends. The method has been examined for isolated word recognition, and this paper extends it for continuous word recognition. Experimental evaluations were performed for tasks of various vocabulary size. The result at a small vocabulary task with 14 words has shown that our proposed algorithm can determine each word for about 0.053 second prior to the actual end of speech on average, without any degradation of recognition accuracy. Another result on a station names recognition task with vocabulary size of 8738 has shown that our proposed algorithm can determine each word for about 0.48 second on average after the actual end of speech. The comparison results on various acoustic models are also reported.
Keyword (in Japanese) (See Japanese page) 
(in English) Speech recognition / Search algorithm / Progressive output / Tree lexicon / Confidence measure / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 357, SP2010-94, pp. 77-82, Dec. 2010.
Paper # SP2010-94 
Date of Issue 2010-12-13 (NLC, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee NLC SP  
Conference Date 2010-12-20 - 2010-12-21 
Place (in Japanese) (See Japanese page) 
Place (in English) National Olympics Memorial Youth Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Information Access, Speech and Language Processing, etc. 
Paper Information
Registration To SP 
Conference Code 2010-12-NLC-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Successive Rapid Hypothesis Determination Algorithm for Continuous Word Recognition 
Sub Title (in English)  
Keyword(1) Speech recognition  
Keyword(2) Search algorithm  
Keyword(3) Progressive output  
Keyword(4) Tree lexicon  
Keyword(5) Confidence measure  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroyuki Ohno  
1st Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
2nd Author's Name Hiroshi Kojima  
2nd Author's Affiliation Nagoya Institute of Technology/Hitachi Solutions, Laboratories (Nagoya Inst. of Tech/Hitachi Solutions, Ltd.)
3rd Author's Name Yoshihiko Nankaku  
3rd Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
4th Author's Name Akinobu Lee  
4th Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
5th Author's Name Keiichi Tokuda  
5th Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
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Speaker Author-1 
Date Time 2010-12-21 11:05:00 
Presentation Time 25 minutes 
Registration for SP 
Paper # NLC2010-21, SP2010-94 
Volume (vol) vol.110 
Number (no) no.356(NLC), no.357(SP) 
Page pp.77-82 
#Pages 6 
Date of Issue 2010-12-13 (NLC, SP) 

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