Symbiosis Co-evolutionary Population Topology Differential Evolution

DE is an evolutionary computation technique which is of simple concept and easy implementation. A number of significant modifications of DE have been proposed in recent years, including a few approaches referring to the idea of population topology of DE. The present paper proposes a novel symbiosis co-evolutionary model based on the population topology of DE, namely SCoPTDE. In the model, based on a specific topology, the population is divided into small species. The individual symbiotic evolution between and in species. The presented modification is tested on commonly used benchmark problems CEC2005 for unconstrained optimization and compared with other DE methods with different population topology. The comparisons show that SCoPTDE improves the performance of DE, offering higher solution quality and stronger robustness.