Paper Abstract and Keywords |
Presentation |
2015-07-16 15:10
A study on discriminative approach for estimation of the divergence between distributions and its application to language identification Yosuke Kashiwagi, Congying Zhang, Daisuke Saito, Nobuaki Minematsu (Tokyo Univ.) SP2015-38 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, we propose a method for estimating the statistical divergence between probability distributions by a discriminative approach and its use for language identification tasks. Statistical divergence is widely used in pattern recognition. Since statistical divergence is defined as functional of two probability density functions, it has to assume a certain form for these density functions. Then, if there is mismatch between the assumed distribution form and its true distribution, the divergence has to be obtained with errors. In our proposed method, by using Bayes' theorem, we estimate the statistical divergence with a discriminative model. If we use neural network as discriminative model, since it does not require any specific form of distribution, it will be able to estimate the divergence any distribution form. When the amount of data is small, however, it becomes difficult to calculate the integral of a function over all the feature space and to train neural networks. To mitigate this problem, we use a model adaptation method for neural networks and a sampling approach to integrate the function. We apply this approach to language identification tasks, where obtained divergences are used to extract a speech structure. The experimental evaluation results shows our approach can improve the performance compared to the conventional I-vector-based approach. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
neural networks / divergence between distributions / language identification / acoustic model / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 146, SP2015-38, pp. 13-18, July 2015. |
Paper # |
SP2015-38 |
Date of Issue |
2015-07-09 (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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SP2015-38 |
Conference Information |
Committee |
SP IPSJ-SLP |
Conference Date |
2015-07-16 - 2015-07-17 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Katakura Suwako Hotel |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Speech recognition and understanding, dialog system, etc. |
Paper Information |
Registration To |
SP |
Conference Code |
2015-07-SP-SLP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A study on discriminative approach for estimation of the divergence between distributions and its application to language identification |
Sub Title (in English) |
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Keyword(1) |
neural networks |
Keyword(2) |
divergence between distributions |
Keyword(3) |
language identification |
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acoustic model |
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1st Author's Name |
Yosuke Kashiwagi |
1st Author's Affiliation |
The University of Tokyo (Tokyo Univ.) |
2nd Author's Name |
Congying Zhang |
2nd Author's Affiliation |
The University of Tokyo (Tokyo Univ.) |
3rd Author's Name |
Daisuke Saito |
3rd Author's Affiliation |
The University of Tokyo (Tokyo Univ.) |
4th Author's Name |
Nobuaki Minematsu |
4th Author's Affiliation |
The University of Tokyo (Tokyo Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-07-16 15:10:00 |
Presentation Time |
30 minutes |
Registration for |
SP |
Paper # |
SP2015-38 |
Volume (vol) |
vol.115 |
Number (no) |
no.146 |
Page |
pp.13-18 |
#Pages |
6 |
Date of Issue |
2015-07-09 (SP) |
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