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

Table 4

Training level for the statistical results related to soft computing models based on the daily scale.

Index	MAE (mm)	PBIAS	NSE
Training level
MLP-WWO	3.12	0.14	0.94
MLP-PSO	3.19	0.35	0.91
MLP-GA	3.22	0.37	0.89
MLP	3.25	0.39	0.85
Testing level
MLP-WWO	5.15	0.17	0.92
MLP-PSO	5.22	0.47	0.90
MLP-GA	5.28	0.49	0.87
MLP	5.32	0.51	0.84