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Paper Abstract and Keywords
Presentation 2025-10-02 10:00
A Chaotic Dynamics Based Hybrid Metaheuristic Method for Solving the Capacitated Vehicle Routing Problem
Fengkai Guo (Tokyo Univ. of Science), Takafumi Matsuura (Nippon Institute of Technology), Takayuki Kimura (Tokyo City Univ.), Tohru Ikeguchi (Tokyo Univ. of Science) CAS2025-17 NLP2025-34
Abstract (in Japanese) (See Japanese page) 
(in English) This study proposes a hybrid metaheuristic method based on chaotic dynamics for solving the capacitated vehicle routing problem. The conventional chaotic search method employs a chaotic neural network (CNN) to control execution of local search methods (e.g. 2-opt, CROSS-Exchange). However, it has a limitation to diversify the search space. To overcome this issue, we introduce a destroy-and-repair strategy and integrate both the local search and the destroy-and-repair strategies into the CNN, resulting in the proposed new chaotic search approach. Numerical experiments using Set A of the CVRPLIB benchmark are conducted, comparing the proposed method with the existing methods. The results demonstrate that the proposed method achieves significantly lower gap rates than the conventional methods, particularly on medium-scale instances, validating the effectiveness of dynamically switching between local search and destroy-and-repair operations.
Keyword (in Japanese) (See Japanese page) 
(in English) Combinatorial optimization problem / Vehicle routing problem / Chaotic dynamics / Local search / Large Neigh-borhood Search / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 190, NLP2025-34, pp. 1-6, Oct. 2025.
Paper # NLP2025-34 
Date of Issue 2025-09-25 (CAS, NLP) 
ISSN 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 CAS2025-17 NLP2025-34

Conference Information
Committee CAS NLP  
Conference Date 2025-10-02 - 2025-10-03 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Nonlinear Problems, Circuits and Systems, etc. 
Paper Information
Registration To NLP 
Conference Code 2025-10-CAS-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Chaotic Dynamics Based Hybrid Metaheuristic Method for Solving the Capacitated Vehicle Routing Problem 
Sub Title (in English)  
Keyword(1) Combinatorial optimization problem  
Keyword(2) Vehicle routing problem  
Keyword(3) Chaotic dynamics  
Keyword(4) Local search  
Keyword(5) Large Neigh-borhood Search  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Fengkai Guo  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Takafumi Matsuura  
2nd Author's Affiliation Nippon Institute of Technology (Nippon Institute of Technology)
3rd Author's Name Takayuki Kimura  
3rd Author's Affiliation Tokyo City University (Tokyo City Univ.)
4th Author's Name Tohru Ikeguchi  
4th Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2025-10-02 10:00:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # CAS2025-17, NLP2025-34 
Volume (vol) vol.125 
Number (no) no.189(CAS), no.190(NLP) 
Page pp.1-6 
#Pages 6 
Date of Issue 2025-09-25 (CAS, NLP) 

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