“…The performance of the proposed method is compared with several recently proposed methods, such as the multilevel cooperative coevolution (ML-CC) [48], cooperative coevolution with delta grouping (CC-DG) [49], differential evolution with cooperative coevolution with several variants (DECC-G, DECC-DML, DECC-D, DECC-VP) [49], [50], sequential DE enhanced by neighborhood search (SDEeNS) [51], cooperative PSO (CPSO-H) [10], DMSPSO [26], [52], and AHPS 2 [53]. The default values used for parameter settings for all of the methods are described in [53], and the maximum fitness evaluations of FEs max are set at 3.00E+06, which is the stopping criterion. The population size S used by these methods is set to S = 50.…”