Table 4. Model fitting accuracy test results of GM(1,1) model and DGM model.

Model	(accuracy scale)	ε (accuracy scale)	C (accuracy scale)	p (accuracy scale)
GM(1,1)	0.0737 (Third)	0.9514 (First)	0.1039 (First)	1 (First)
DGM	0.0259 (Second)	0.9948 (First)	0.0294 (First)	1 (First)