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Computer Science > Neural and Evolutionary Computing

arXiv:1701.01271 (cs)
[Submitted on 5 Jan 2017]

Title:Subpopulation Diversity Based Selecting Migration Moment in Distributed Evolutionary Algorithms

Authors:Chengjun Li, Jia Wu
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Abstract:In distributed evolutionary algorithms, migration interval is used to decide migration moments. Nevertheless, migration moments predetermined by intervals cannot match the dynamic situation of evolution. In this paper, a scheme of setting the success rate of migration based on subpopulation diversity at each interval is proposed. With the scheme, migration still occurs at intervals, but the probability of immigrants entering the target subpopulation will be determined by the diversity of this subpopulation according to a proposed formula. An analysis shows that the time consumption of our scheme is acceptable. In our experiments, the basement of parallelism is an evolutionary algorithm for the traveling salesman problem. Under different value combinations of parameters for the formula, outcomes for eight benchmark instances of the distributed evolutionary algorithm with the proposed scheme are compared with those of a traditional one, respectively. Results show that the distributed evolutionary algorithm based on our scheme has a significant advantage on solutions especially for high difficulty instances. Moreover, it can be seen that the algorithm with the scheme has the most outstanding performance under three value combinations of above-mentioned parameters for the formula.
Comments: 17 pages, 9 figures
Subjects: Neural and Evolutionary Computing (cs.NE)
Cite as: arXiv:1701.01271 [cs.NE]
  (or arXiv:1701.01271v1 [cs.NE] for this version)
  https://doi.org/10.48550/arXiv.1701.01271

Submission history

From: Chengjun Li [view email]
[v1] Thu, 5 Jan 2017 10:32:24 UTC (119 KB)
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