Parameter Estimation in Rainfall-Runoff Modelling Using Distributed Versions of Particle Swarm Optimization Algorithm

Table 3

Statistical indices of benchmark functions for the APartW and AdaptW modifications.

Func.	PSO	Min	%	Median	%	Max	Mean	Std	P value
	APartW								1.000
	AdaptW
	APartW								0.970
	AdaptW
	APartW								0.439
	AdaptW
	APartW								0.000
	AdaptW
	APartW								0.424
	AdaptW
	APartW								1.000
	AdaptW
	APartW								0.040
	AdaptW
	APartW								0.968
	AdaptW
	APartW								0.770
	AdaptW
	APartW								0.973
	AdaptW
	APartW								0.049
	AdaptW

value of the statistical Wilcoxon test. Nonsignificant differences in medians are highlighted in bold; significantly better median in terms of the new adaptive PSO APartW is highlighted in bold with stars ( for value ≤ 0.05; for value ≤ 0.001).