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Table 6 Error mean and error std. for different methods.

From: A Hybrid Particle Swarm Optimization with Dragonfly for Adaptive ANFIS to Model the Corrosion Rate in Concrete Structures

Method Train Test
  Error mean Error Std Error mean Error Std
GA 0.4586 6.9268 0.2699 5.6155
PSO 0.1002 6.1799 0.0288 4.1593
HPSO − 0.2043 6.4002 − 0.3394 3.9592
PSO–DA − 0.0552 5.6300 − 0.1582 2.6873
IGA − 0.1410 6.7674 − 0.2814 5.1517
MGA 0.1779 6.9048 − 0.0728 5.5206
Bat 0.7239 6.3980 0.2750 4.4894
BBO − 0.1175 6.0749 0.2107 5.1976