Research Article

Opposition-Based Barebones Particle Swarm for Constrained Nonlinear Optimization Problems

Table 2

Mean best function values achieved by PSO, BPSO, OBPSO-1, and OBPSO, and the best results among the four algorithms are shown in bold.

Functions Optimum PSO mean BPSO mean OBPSO-1 mean OBPSO mean

−15 −13.013 −14.46 −15−15
−0.803619 −0.47191 −0.58944 −0.70536−0.79973
−1.0 −1.00468 −1.00339 −1.00287 −1.00126
−30665.539 −30665.5−30665.5−30665.5−30665.5
5126.4981 5213.14 5228.32 5154.76 5126.68
−6961.814 −6961.81−6961.81−6961.81−6961.81
24.306 25.9185 25.3492 24.8576 24.4196
−0.095825 −0.095825−0.095825−0.095825−0.095825
680.630 680.679 680.630680.630680.630
7049.248 7639.4 7474.5 7292.82 7049.2605
0.750 0.7490.7490.7490.749
−1.0 −1.0−1.0−1.0−1.0
0.05395 0.819146 0.61415 0.52312 0.33837