Abstract
This paper proposes an improved memetic algorithm relying on ring neighborhood topology for constrained optimization problems based on our previous work in Cai et al. (Soft Comput (in press), 2013). The main motivation of using ring neighborhood topology is to provide a good balance between effective exploration and efficient exploitation, which is a very important design issue for memetic algorithms. More specifically, a novel variant of invasive weed optimization (IWO) as the local refinement procedure is proposed in this paper. The proposed IWO variant adopts a neighborhood-based dispersal operator to achieve more fine-grained local search through the estimation of neighborhood fitness information relying on the ring neighborhood topology. Furthermore, a modified version of differential evolution (DE), known as “DE/current-to-best/1”, is integrated into the improved memetic algorithm with the aim of providing a more effective exploration. Performance of the improved memetic algorithm has been comprehensively tested on 13 well-known benchmark test functions and four engineering constrained optimization problems. The experimental results show that the improved memetic algorithm obtains greater competitiveness when compared with the original memetic approach Cai et al. in (Soft Comput (in press), 2013) and other state-of-the-art algorithms. The effectiveness of the modification of each component in the proposed approach is also discussed in the paper.
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Acknowledgments
The authors would like to thank the related associate editor and the anonymous reviewers for their time and valuable suggestions. This work was supported in part by the National Natural Science Foundation of China (NSFC) under grant 61300159, 61175073 and 51375287, by the Natural Science Foundation of Jiangsu Province under grant BK20130808, by the Research Fund for the Doctoral Program of Higher Education of China under grant 20123218120041 and by the Fundamental Research Funds for the Central Universities of China under grant NZ2013306.
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Hu, Z., Cai, X. & Fan, Z. An improved memetic algorithm using ring neighborhood topology for constrained optimization. Soft Comput 18, 2023–2041 (2014). https://doi.org/10.1007/s00500-013-1183-7
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DOI: https://doi.org/10.1007/s00500-013-1183-7