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Table 2 Optimal function values found by PS, cNrGA, HCQPSO, and SZOA over 25 independent runs

From: Tuning rectangular microstrip antenna through scan and zoom algorithm

f(·) Algorithm min med max std
f 1 PS 0.0000 0.0000 0.0000 0.0000
  cNrGA 0.0000 0.0000 0.0000 0.0000
  HCQPSO 0.0000 0.0000 0.0000 0.0000
  SZOA 0.0000 0.0000 0.0000 0.0000
f 2 PS 8.600E −3 8.600E −3 8.600E −3 0.0000
  cNrGA 1.369E −4 2.870E −3 2.560E −3 0.0077
  HCQPSO 7.250E −5 1.740E −4 2.850E −4 0.0001
  SZOA 3.210E −5 3.210E −5 3.210E −5 0.0000
f 3 PS 2.308E2 2.308E2 2.308E2 0.0000
  cNrGA 9.171E0 1.039E1 1.989E1 0.6293
  HCQPSO 9.660E0 1.863E1 3.404E2 7.7001
  SZOA 8.955E0 8.955E0 8.955E0 0.0000
f 4 PS 4.560E0 4.560E0 4.560E0 0.0000
  cNrGA 1.266E −1 3.280E1 7.460E1 32.3284
  HCQPSO 3.440E −2 6.260E0 1.008E1 4.7548
  SZOA 5.490E −4 5.490E −4 5.490E −4 0.0000
f 5 PS 2.059E1 2.059E1 2.059E1 0.0000
  cNrGA 2.027E1 2.035E1 2.045E1 0.0774
  HCQPSO 2.024E1 2.039E1 2.054E1 0.0790
  SZOA 2.023E1 2.023E1 2.023E1 0.0000
f 6 PS 1.840E3 1.840E3 1.840E3 0.0000
  cNrGA 5.916E2 6.667E2 1.185E3 300.8831
  HCQPSO 6.880E2 1.195E3 1.637E3 236.6575
  SZOA 5.799E2 5.799E2 5.799E2 0.0000
  1. Minimum, median, maximum, and standard deviation are respectively abbreviated as min, med, max, and std