Production Scheduling of Open Pit Mines Using Particle Swarm Optimization Algorithm

Table 4

Numerical results of different variants of the PSO algorithm in the case of problem 2.

Local PSO	% GAP		CPU time (minutes)
	Mean	Standard deviation
= 4	2.00	0.24	22.55
= 8	1.95	0.30	21.25
= 12	1.82	0.13	21.31
= 16	1.92	0.16	21.60
= 20	1.90	0.20	21.76
= 24	1.99	0.25	21.86
Global PSO	2.23	0.22	22.46
Multistart PSO	2.06	0.27	24.26