Table 4: Performance evaluation of different models for testing dataset.

Performance index  Meyerhof [2]  Hansen [3]  Vesic [4]  ANN [5]   FIS [5]SVM*GP*
Polykernel
(C = 100; d = 2)
RBF Kernel
(C = 250; σ = 3)

R0.94100.93660.94560.99510.98990.97750.98060.9972
E0.78630.75830.73210.99420.98580.95410.95040.9965
RMSE (kPa)269.947287.099302.26962.62098.002125.087130.10244.967
MBE (kPa)−127.724−139.611−158.552−21.8913.9234.114.754.019
MARE22.067920.015228.51513.31419.45614.72789.45287.6817

Present study.