Paper Abstract and Keywords |
Presentation |
2008-11-10 13:30
Spoken Dialog Strategy Based On Understanging Graph Search Yuji Kinoshita, Chiyomi Miyajima, Norihide Kitaoka, Kazuya Takeda (Nagoya Univ.) NLC2008-19 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We regarded information retrieval as a graph search problem and proposed several novel dialog strategies
that can recover from misrecognition through a spoken dialog that traverses the graph. To recover from misrecognition
without seeking confirmation, our system kept multiple understanding hypotheses at each turn and searched
for a globally optimal hypothesis in the graph whose nodes express understanding states across user utterances in a
whole dialog. For this search, we adopted three types of best-first search using heuristics. As for a dialog strategy,
we introduced a new criterion based on efficiency in information retrieval and consistency with understanding hypotheses
to select an appropriate system response. Using such criterion, the system removes the ambiguity so that
users do not feel that a response that conflicts with the actual user intent is unnatural. We developed a spoken
dialog system using these techniques and showed dialog examples in which misrecognition was naturally corrected.
From a simulation dialog experiment, we showed that our strategy was efficient in terms of the number of turns. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
spoken dialog system / information retrieval / graph search problem / system response generation / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 283, NLC2008-19, pp. 1-6, Nov. 2008. |
Paper # |
NLC2008-19 |
Date of Issue |
2008-11-03 (NLC) |
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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NLC2008-19 |
Conference Information |
Committee |
NLC |
Conference Date |
2008-11-10 - 2008-11-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
NICT (Tokyo) |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
NLC |
Conference Code |
2008-11-NLC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Spoken Dialog Strategy Based On Understanging Graph Search |
Sub Title (in English) |
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Keyword(1) |
spoken dialog system |
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information retrieval |
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graph search problem |
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system response generation |
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1st Author's Name |
Yuji Kinoshita |
1st Author's Affiliation |
Nagoya University (Nagoya Univ.) |
2nd Author's Name |
Chiyomi Miyajima |
2nd Author's Affiliation |
Nagoya University (Nagoya Univ.) |
3rd Author's Name |
Norihide Kitaoka |
3rd Author's Affiliation |
Nagoya University (Nagoya Univ.) |
4th Author's Name |
Kazuya Takeda |
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Nagoya University (Nagoya Univ.) |
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Speaker |
Author-1 |
Date Time |
2008-11-10 13:30:00 |
Presentation Time |
40 minutes |
Registration for |
NLC |
Paper # |
NLC2008-19 |
Volume (vol) |
vol.108 |
Number (no) |
no.283 |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2008-11-03 (NLC) |
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