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An Efficient Memetic Algorithm for the Minimum Load Coloring Problem

Author

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  • Zhiqiang Zhang

    (Key Laboratory of Pattern Recognition and Intelligent Information Processing, Institutions of Higher Education of Sichuan Province, Chengdu University, Chengdu 610106, China
    School of Information Science and Engineering, Chengdu University, Chengdu 610106, China)

  • Zhongwen Li

    (Key Laboratory of Pattern Recognition and Intelligent Information Processing, Institutions of Higher Education of Sichuan Province, Chengdu University, Chengdu 610106, China
    School of Information Science and Engineering, Chengdu University, Chengdu 610106, China)

  • Xiaobing Qiao

    (College of Teachers, Chengdu University, Chengdu 610106, China)

  • Weijun Wang

    (School of Information Science and Engineering, Chengdu University, Chengdu 610106, China)

Abstract

Given a graph G with n vertices and l edges, the load distribution of a coloring q : V → {red, blue} is defined as d q = ( r q , b q ), in which r q is the number of edges with at least one end-vertex colored red and b q is the number of edges with at least one end-vertex colored blue. The minimum load coloring problem (MLCP) is to find a coloring q such that the maximum load, l q = 1/ l × max{ r q , b q }, is minimized. This problem has been proved to be NP-complete. This paper proposes a memetic algorithm for MLCP based on an improved K-OPT local search and an evolutionary operation. Furthermore, a data splitting operation is executed to expand the data amount of global search, and a disturbance operation is employed to improve the search ability of the algorithm. Experiments are carried out on the benchmark DIMACS to compare the searching results from memetic algorithm and the proposed algorithms. The experimental results show that a greater number of best results for the graphs can be found by the memetic algorithm, which can improve the best known results of MLCP.

Suggested Citation

  • Zhiqiang Zhang & Zhongwen Li & Xiaobing Qiao & Weijun Wang, 2019. "An Efficient Memetic Algorithm for the Minimum Load Coloring Problem," Mathematics, MDPI, vol. 7(5), pages 1-20, May.
    • Handle: RePEc:gam:jmathe:v:7:y:2019:i:5:p:475-:d:234245
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    References listed on IDEAS

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    1. Gintaras Palubeckis & Armantas Ostreika & Dalius Rubliauskas, 2015. "Maximally diverse grouping: an iterated tabu search approach," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 66(4), pages 579-592, April.
    2. Wayne Pullan, 2006. "Phased local search for the maximum clique problem," Journal of Combinatorial Optimization, Springer, vol. 12(3), pages 303-323, November.
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