Table 5.

Metrics of models in Validation Case 1.

Metrics	GM (1,1)	GRM (1,1)	GERM (1,1,$e^{at}$)	GERM (1,1,$e^{at}$) rank
MAPETOT(%)	19.8793	1.4072	0.1009	1
RMSPE	17.1908	1.5973	0.1001	1
MAE	0.8626	0.0554	0.0060	1
MSE	2.1983	0.0040	5.03E-05	1
IA	0.95181	0.99988	0.999998	1
U1	0.1093	0.0051	0.0005	1
U2	0.2390	0.0102	0.001143	1
R	0.9749	0.9999	1.0000	1