Journal of East China Normal University(Natural Sc ›› 2019, Vol. 2019 ›› Issue (1): 66-75.doi: 10.3969/j.issn.1000-5641.2019.01.08

• Computer Science • Previous Articles     Next Articles

Multi-strategy gravitational search algorithm based on dynamic grouping

ZHANG Qiang, WANG Mei   

  1. School of Computer and Information Technology, Northeast Petroleum University, Daqing Heilongjiang 163318, China
  • Received:2018-01-12 Online:2019-01-25 Published:2019-01-24

Abstract: A multi-strategy gravitational search algorithm based on dynamic grouping is proposed in this paper. At the initial stage of the algorithm iteration, adaptive grouping strategies are used to optimize populations. Only the least-optimal individuals are updated in each group. The cloud model theory is used to improve the evolutionary behavior of the optimal individuals. In the later part of the algorithm iteration, the populations are divided into dominant and extension subgroups. The differential mutation operator is subsequently used to update the dominant subgroups to improve the precision and speed of the optimization. Tent chaos theory is used to update the extension subgroups to complete the individual variation. Typical complex function tests show that the algorithm has good convergence accuracy and computational speed.

Key words: gravitational search algorithm, cloud model, good point set, chaos, continuous space optimization

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