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Enhanced multi-species-based particle swarm optimization for multi-modal function
XIE Hongxia, MA Xiaowei, CHEN Xiaoxiao, XING Qiang
Journal of Computer Applications    2016, 36 (9): 2516-2520.   DOI: 10.11772/j.issn.1001-9081.2016.09.2516
Abstract1165)      PDF (769KB)(380)       Save
It is difficult to balance local development and global exploration in a multi-modal function optimization process, therefore, an Enhanced Multi-Species-based Particle Swarm Optimization (EMSPSO) was proposed. An improved multi-species evolution strategy was introduced to Species-based Particle Swarm Optimization (SPSO). Several species which evolved independently were established by selecting seed in the individual optimal values to improve the stability of algorithm convergence. A redundant particle reinitialization strategy was introduced to the algorithm in order to improve the utilization of the particles, and enhance global search capability and search efficiency of the algorithm. Meanwhile, in order to prevent missing optimal extreme points in the optimization process, the rate update formula was also improved to effectively balance the local development and global exploration capability of the algorithm. Finally, six typical test functions were selected to test the performance of EMSPSO. The experimental results show that, EMSPSO has high multi-modal optimization success rate and optimal performance of global extremum search.
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