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

Table 5

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

Error	D-GMC		Modified GMC
	Model value	Predictive value	Model value	Predictive value
MAPE (%)	0.98	2.82	1.15 × 10^−11	1.46
RMSPE (%)	1.16	3.23	1.17 × 10^−11	1.92