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Paper Abstract and Keywords
Presentation 2011-10-07 11:00
On an analysis of speaker dependency and speaker adaptation for the recognition of back-channeling expressions in dialog between an robot and persons with dementia
Ken Sadohara, Hiroaki Kojima (AIST), Takuya Narita, Misato Nihei, Minoru Kamata (Univ. Tokyo), Shin-ichi Ohnaka, Yoshihiro Fujita (NEC), Rina Ishiwata, Takenobu Inoue (NRCD) SP2011-62 WIT2011-44
Abstract (in Japanese) (See Japanese page) 
(in English) For the purpose of establishing a dialog between a robot and persons with dementia to remind information, this paper concerns classification of back-channeling expressions into 11 functional categories. An off-line experiment shows that the classification rate of 60% in average is yielded
by a classifier using a language model for a fixed task domain and an acoustic model for elderly persons. It is also shown that the classification rate correlates negatively with the age and not with a scale of dementia. To improve the classification rate for persons older than 80 years, speaker adaptation is shown to be effective and increase the rate up to 70%. For binary classification into affirmative expression and the others, the classification rate is further improved up to 80%.
Keyword (in Japanese) (See Japanese page) 
(in English) Dementia / Aged / Assistive Technology / Automatic Speech Recognition / Speaker Adaptation / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 225, SP2011-62, pp. 61-65, Oct. 2011.
Paper # SP2011-62 
Date of Issue 2011-09-29 (SP, WIT) 
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 WIT SP  
Conference Date 2011-10-06 - 2011-10-07 
Place (in Japanese) (See Japanese page) 
Place (in English) TFT Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Welfare and speech processing, etc. 
Paper Information
Registration To SP 
Conference Code 2011-10-WIT-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On an analysis of speaker dependency and speaker adaptation for the recognition of back-channeling expressions in dialog between an robot and persons with dementia 
Sub Title (in English)  
Keyword(1) Dementia  
Keyword(2) Aged  
Keyword(3) Assistive Technology  
Keyword(4) Automatic Speech Recognition  
Keyword(5) Speaker Adaptation  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ken Sadohara  
1st Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST) (AIST)
2nd Author's Name Hiroaki Kojima  
2nd Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST) (AIST)
3rd Author's Name Takuya Narita  
3rd Author's Affiliation University of Tokyo (Univ. Tokyo)
4th Author's Name Misato Nihei  
4th Author's Affiliation University of Tokyo (Univ. Tokyo)
5th Author's Name Minoru Kamata  
5th Author's Affiliation University of Tokyo (Univ. Tokyo)
6th Author's Name Shin-ichi Ohnaka  
6th Author's Affiliation NEC Corpolation (NEC)
7th Author's Name Yoshihiro Fujita  
7th Author's Affiliation NEC Corpolation (NEC)
8th Author's Name Rina Ishiwata  
8th Author's Affiliation Research Institute of National Rehabilitation Center for Persons with Disabilities (NRCD)
9th Author's Name Takenobu Inoue  
9th Author's Affiliation Research Institute of National Rehabilitation Center for Persons with Disabilities (NRCD)
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Speaker Author-1 
Date Time 2011-10-07 11:00:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2011-62, WIT2011-44 
Volume (vol) vol.111 
Number (no) no.225(SP), no.226(WIT) 
Page pp.61-65 
#Pages
Date of Issue 2011-09-29 (SP, WIT) 


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