Figure 4

Obtained pareto fronts for WFG problems. (a) Obtained pareto fronts for WFG1 problem. (b) Obtained pareto fronts for WFG2 problem. (c) Obtained pareto fronts for WFG3 problem. (d) Obtained pareto fronts for WFG4 problem. (e) Obtained pareto fronts for WFG5 problem. (f) Obtained pareto fronts for WFG6 problem. (g) Obtained pareto fronts for WFG7 problem. (h) Obtained pareto fronts for WFG8 problem. (i) Obtained pareto fronts for WFG9 problem.