Forecasting Daily and Monthly Reference Evapotranspiration in the Aidoghmoush Basin Using Multilayer Perceptron Coupled with Water Wave Optimization

Table 5

The training level for the statistical results related to the soft computing models based on the monthly scale.

Index	MAE (mm)	PBIAS	NSE
Training level
MLP-WWO	0.49	0.19	0.95
MLP-PSO	0.53	0.32	0.92
MLP-GA	0.57	0.33	0.90
MLP	0.59	0.35	0.88
Testing level
MLP-WWO	0.51	0.21	0.93
MLP-PSO	0.55	0.34	0.90
MLP-GA	0.58	0.37	0.87
MLP	0.61	0.39	0.85