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Table 9 Influence of the various number of membership functions on PSO–DA ANFIS.

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

Number of membership function MAPE Efficiency R2 RMSE
5 3.56 0.85 0.84 4.44
8 3.60 0.85 0.84 4.51
11 2.09 0.91 0.90 3.52
14 1.67 0.97 0.92 2.68
18 1.88 0.94 0.89 2.93
  1. Bold numbers in the table are related to the maximum or minimum of the obtained results