Improving Vector Evaluated Particle Swarm Optimisation Using Multiple Nondominated Leaders

Table 3

Algorithm performance tested on ZDT2 problem.

Measure		VEPSO	VEPSOnds	VEPSOml1	VEPSOml2
NS	Ave.	8.070000	38.120000	91.090000	99.620000
	SD	6.356822	25.747131	28.474726	3.800000
	Min.	1.000000	1.000000	1.000000	62.000000
	Max.	24.000000	100.000000	100.000000	100.000000
GD	Ave.	0.766956	0.039653	0.005109	0.000152
	SD	0.324444	0.063791	0.010867	0.001009
	Min.	0.240509	0.000000	0.000000	0.000043
	Max.	1.679803	0.310345	0.028380	0.010144
SP	Ave.	0.944524	0.947356	0.267797	0.098572
	SD	0.065266	0.111963	0.315008	0.065826
	Min.	0.797757	0.695715	0.059578	0.064648
	Max.	1.080351	1.278655	1.000004	0.721104
HV	Ave.	—	0.137784	0.250495	0.328291
	SD	—	0.117596	0.127625	0.004182
	Min.	—	—	0.000000	0.286901
	Max.	—	0.311075	0.328807	0.328816