Effective Estimation of Hourly Global Solar Radiation Using Machine Learning Algorithms

Table 11

Estimation results of the two most successful models that were developed by using the M5 rules algorithm according to input data groups of both provinces.

Data groups	Target provinces
	Kahramanmaras				Isparta
	RMSE	MAE	SMAPE (%)		RMSE	MAE	SMAPE (%)
GR1	0.1216	0.0915	14.37	0.8026	0.1400	0.1114	15.46	0.6514
GR2	0.0625	0.0431	9.07	0.9479	0.0666	0.0447	8.77	0.9218
GR3	0.0625	0.0430	9.09	0.9479	0.0650	0.0441	8.42	0.9254
GR4	0.1254	0.0944	14.56	0.7903	0.1454	0.1140	15.44	0.6236
GR5	0.0610	0.0418	9.01	0.9506	0.0814	0.0593	9.37	0.8822
GR6	0.0614	0.0420	9.08	0.9500	0.0655	0.0445	8.43	0.9245