A New Approach to Improve Accuracy of Grey Model GMC in Time Series Prediction

Table 3

Performance evaluation for fitting and Prediction accuracies of D-GMC and modified GMC models.

Criteria	D-GMC		Modified GMC
	Model value	Predictive value	Model value	Predictive value
MAPE (%)	3.25	3.71	0.83	0.42
RMSPE (%)	4.19	3.90	1.06	0.47