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Paper Abstract and Keywords
Presentation 2018-03-20 09:00
[Poster Presentation] Effective Frequency Bands and Features for Epileptic Focus Detectionfrom Interical Electrocorticogram
Tatsunori Itakura, Shintaro Ito, Toshihisa Tanaka (TUAT), Hidenori Sugano (Juntendo Univ.) EA2017-159 SIP2017-168 SP2017-142
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose fast singular value decomposition (SVD) based on the Chebyshev polynomial approximation (CPA). The SVD takes enormous computation time recently since the size of a given matrix becomes large. To solve the problem, SVD based on the polar decomposition (SVDPD) has been proposed. In the SVDPD, the matrix decomposition can be achieved by decomposing each independent block diagonal matrix in the given matrix. Therefore, the SVDPD can easily be accelerated by using the parallel computation technique. However, the polar decomposition still takes computation time because it exploits the QR decomposition of a large matrix. In this paper, the CPA is applied to the polar decomposition to reduce its computation cost. Thanks to the CPA, the polar decomposition can be conducted without using the QR decomposition. The experiments show that our CPA-based SVD can decompose a matrix faster than the previous ones, and the proposed method does not affect the performance of an application.
Keyword (in Japanese) (See Japanese page) 
(in English) Singular value decomposition / Polar decomposition / Chebyshev polynomial approximation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 516, SIP2017-168, pp. 311-316, March 2018.
Paper # SIP2017-168 
Date of Issue 2018-03-12 (EA, SIP, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
Download PDF EA2017-159 SIP2017-168 SP2017-142

Conference Information
Committee SIP EA SP MI  
Conference Date 2018-03-19 - 2018-03-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing, and Related Topics [SIP, EA, SP]/ Medical Image Engineering, Analysis, Recognition, etc. [MI] 
Paper Information
Registration To SIP 
Conference Code 2018-03-SIP-EA-SP-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effective Frequency Bands and Features for Epileptic Focus Detectionfrom Interical Electrocorticogram 
Sub Title (in English)  
Keyword(1) Singular value decomposition  
Keyword(2) Polar decomposition  
Keyword(3) Chebyshev polynomial approximation  
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1st Author's Name Tatsunori Itakura  
1st Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
2nd Author's Name Shintaro Ito  
2nd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
3rd Author's Name Toshihisa Tanaka  
3rd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
4th Author's Name Hidenori Sugano  
4th Author's Affiliation Juntendo University (Juntendo Univ.)
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Speaker Author-2 
Date Time 2018-03-20 09:00:00 
Presentation Time 90 minutes 
Registration for SIP 
Paper # EA2017-159, SIP2017-168, SP2017-142 
Volume (vol) vol.117 
Number (no) no.515(EA), no.516(SIP), no.517(SP) 
Page pp.311-316 
#Pages
Date of Issue 2018-03-12 (EA, SIP, SP) 


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