Table 13.

The statistical result of various algorithms for the Himmelblau problem, the bold numbers means the best performance among whole competitors.

	Best	Worst	Ave	Std	Time
ESOA	−30,664.5	−30,422.6	−30,615.4	88.457	0.68607
PSO [16]	−30,665.5	−30,186.2	−30509.8	200.628	0.64493
GA [5]	−30,333.1	−29,221.1	−29,853.2	312.106	0.71309
DE [6]	−30,663.2	−30,655.2	−30,658.8	2.35697	0.62209
GWO [18]	−30,662.7	−30,453.7	−30,637.6	61.3822	0.615
HHO [83]	−30,182.6	−29,643	−29,902.7	186.764	0.85409