SOMO-m Optimization Algorithm with Multiple Winners

Table 4

Comparison of SOMO-2 and the original SOMO algorithms for finding two minima.

Test function	Algorithm	Mean	Standard deviation	Time; mean (s)	Time; SD (s)
	SOMO
	First minimum	−7.36465824205229	9.781475238601051𝑒−014	2.1060	2.1278
𝑈2 function	Second minimum	−5.99322845918991	0.00379247207700	2.9716	2.865
	SOMO-2
	First minimum	−7.36465824124180	4.047965312150572𝑒−009	1.4967	1.4237
	Second minimum	−6.07080647154294	6.025651408745671𝑒−013
	SOMO
	First minimum	−1.895835670663015𝑒+004	3.927781801202260𝑒−010	1.2414	1.1168
𝑈1 function	Second minimum	−1.895837311768572𝑒+004	4.152186941602799𝑒−009	1.1343	1.0938
	SOMO-2
	First minimum	−1.895837311745155𝑒+004	2.482103550304831𝑒−007	0.5536	0.5631
	Second minimum	−1.895837311768680𝑒+004	2.906907306783492𝑒−009