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Paper Abstract and Keywords
Presentation 2008-03-28 14:20
A Modified Synchronous Exponential Chaotic Tabu Search for Quadratic Assignment Problems
Naoto Yokota, Yoshihiko Horio (Tokyo Denki Univ.), Kazuyuki Aihara (Univ of Tokyo), Mikio Hasegawa (Tokyo Univ of Science) NLP2007-175
Abstract (in Japanese) (See Japanese page) 
(in English) A tabu search was implemented on a chaotic neural network showing great performance in solving a
quadratic assignment problem (QAP). We have implemented the exponential chaotic tabu search into a hardware
system for size-10 QAPs. Experimental results with the hardware system confirmed superb performance of the system.
In the original chaotic tabu search algorithm, each neuron is sequentially updated. Because of this sequential
update, the hardware system cannot fully utilize its inherent parallelism. In this paper, we propose a synchronous
updating scheme, which simultaneously updates all the neuronal states. Furthermore, we modify the chaotic neuron
model for the synchronous updating scheme. In addition, we propose a new solution construction technique in which
not only the neuron with the maximum internal state is used, but neurons with 2nd-, 3rd-, and so on, maximum
internal states are also considered. Simulation results confirm quick and effective solving ability of the proposed
synchronous exponential chaotic tabu search scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Chaotic Neural Network / Tabu Search / Quadratic Assignment Problems / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 561, NLP2007-175, pp. 49-54, March 2008.
Paper # NLP2007-175 
Date of Issue 2008-03-21 (NLP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 NLP  
Conference Date 2008-03-27 - 2008-03-28 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To NLP 
Conference Code 2008-03-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Modified Synchronous Exponential Chaotic Tabu Search for Quadratic Assignment Problems 
Sub Title (in English)  
Keyword(1) Chaotic Neural Network  
Keyword(2) Tabu Search  
Keyword(3) Quadratic Assignment Problems  
1st Author's Name Naoto Yokota  
1st Author's Affiliation Tokyo Denki university (Tokyo Denki Univ.)
2nd Author's Name Yoshihiko Horio  
2nd Author's Affiliation Tokyo Denki university (Tokyo Denki Univ.)
3rd Author's Name Kazuyuki Aihara  
3rd Author's Affiliation JST/University of Tokyo (Univ of Tokyo)
4th Author's Name Mikio Hasegawa  
4th Author's Affiliation Tokyo University of Science (Tokyo Univ of Science)
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Date Time 2008-03-28 14:20:00 
Presentation Time 25 
Registration for NLP 
Paper # IEICE-NLP2007-175 
Volume (vol) IEICE-107 
Number (no) no.561 
Page pp.49-54 
#Pages IEICE-6 
Date of Issue IEICE-NLP-2008-03-21 

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