Paper Abstract and Keywords |
Presentation |
2012-12-12 15:40
Distribution estimation of hyperparameters in Markov random field model Yoshinori Ohno, Kenji Nagata (Univ. Tokyo), Hayaru Shouno (UEC), Masato Okada (Univ. Tokyo/RIKEN) NC2012-86 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Recent advances in measurement techniques allow us to obtain a large quantity of imaging data in various natural science fields. These data can be analyzed by Markov random field (MRF) models which have made progress in information science. We can estimate hyperparameters in our MRF model, which is a probabilistic one, by the framework of Bayesian inference. When our MRF model is applied to diffusion systems which often appear in the natural sciences, a hyperparameter is an important parameter which corresponds to the diffusion coefficient. Thus, in this study, we calculate not only a point estimate but also a distribution estimate of hyperparameters to evaluate estimation reliability. Besides, we discuss the dependence of estimation accuracy and reliability on the number of pixels in imaging data. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Markov random field model / hyperparameter / distribution estimation / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 345, NC2012-86, pp. 55-60, Dec. 2012. |
Paper # |
NC2012-86 |
Date of Issue |
2012-12-05 (NC) |
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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NC2012-86 |
Conference Information |
Committee |
NC MBE |
Conference Date |
2012-12-12 - 2012-12-12 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Toyohashi University of Technology |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
NC |
Conference Code |
2012-12-NC-MBE |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Distribution estimation of hyperparameters in Markov random field model |
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Markov random field model |
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hyperparameter |
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distribution estimation |
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1st Author's Name |
Yoshinori Ohno |
1st Author's Affiliation |
The University of Tokyo (Univ. Tokyo) |
2nd Author's Name |
Kenji Nagata |
2nd Author's Affiliation |
The University of Tokyo (Univ. Tokyo) |
3rd Author's Name |
Hayaru Shouno |
3rd Author's Affiliation |
The University of Electro-Communications (UEC) |
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Masato Okada |
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The University of Tokyo/RIKEN (Univ. Tokyo/RIKEN) |
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Speaker |
Author-1 |
Date Time |
2012-12-12 15:40:00 |
Presentation Time |
25 minutes |
Registration for |
NC |
Paper # |
NC2012-86 |
Volume (vol) |
vol.112 |
Number (no) |
no.345 |
Page |
pp.55-60 |
#Pages |
6 |
Date of Issue |
2012-12-05 (NC) |
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