Multispecies Coevolution Particle Swarm Optimization Based on Previous Search History

Table 6

The mean CPU time of the compared EA-based methods on Otsu algorithm.

Dim	Algorithms
	MCPSO-PSH	NrGA	CMA-ES	PSO	DE
2 dim	0.3398	0.3088	0.2802	0.2553	0.2478
3 dim	0.3588	0.3193	0.2206	0.2497	0.3170
4 dim	0.3221	0.3897	0.2264	0.2520	0.3418
5 dim	0.3087	0.3903	0.1991	0.2355	0.3481
7 dim	0.3021	0.3818	0.2068	0.2311	0.3583
9 dim	0.3406	0.3949	0.1932	0.2308	0.3390