Improving Vector Evaluated Particle Swarm Optimisation by Incorporating Nondominated Solutions

Table 2

Algorithm performance tested on ZDT2 problem.

Measure	VEPSO	VEPSOnds1	VEPSOnds2
NS
Ave.	8.070000	38.120000	97.490000
SD	6.356822	25.747131	7.832198
Min.	1.000000	1.000000	49.000000
Max.	24.000000	100.000000	100.000000
GD
Ave.	0.766956	0.039653	0.002003
SD	0.324444	0.063791	0.003483
Min.	0.240509	0.000000	0.000198
Max.	1.679803	0.310345	0.017750
SP
Ave.	0.944524	0.947356	0.687560
SD	0.065266	0.111963	0.278814
Min.	0.797757	0.695715	0.242474
Max.	1.080351	1.278655	1.460767
HV
Ave.	—	0.137784	0.296372
SD	—	0.117596	0.053300
Min.	—	—	0.043514
Max.	—	0.311075	0.327309