Evaluation of Temperature-Based Empirical Models and Machine Learning Techniques to Estimate Daily Global Solar Radiation at Biratnagar Airport, Nepal

Table 3

Statistical indicators for ANN models.

Number of hidden neurons	RMSE
	Training	Validation	Training	Validation
3 (ANN1)	2.0001	1.8547	0.7610	0.7240
4 (ANN2)	1.8221	1.8028	0.7903	0.7911
6 (ANN3)	1.6823	2.1954	0.8341	0.7397
8 (ANN4)	2.1564	1.6000	0.8000	0.8479
10 (ANN5)	1.4967	1.8221	0.8485	0.8507