Table 4 Computational complexity for the WSF with SI searching estimators

WSF-PSO

12Q³ + 2M³ + ∑_m=1^MN_m,p^PSON_m,h^PSO[4Q²M + 3QM² + 2Q²]

WSF-PSOGSA

12Q³ + 2M³+ ∑_m=1^MN_m,p^PSOGSAN_m,h^PSOGSA[4Q²M + 3QM² + 2Q²]

WSF-GSA

12Q³ + 2M³ + ∑_m=1^MN_m,p^GSAN_m,h^GSA[4Q²M + 3QM² + 2Q²]

WSF-FAGSA

12Q³ + 2M³ + ∑_m=1^MN_p^FAGSAN_h^FAGSA[4Q²M + 3QM² + 2Q²]