Mathematical Development and Evaluation of Forecasting Models for Accuracy of Inflation in Developing Countries: A Case of Vietnam

Table 10

Evaluating models with GP forecasting errors.

Models	ARIMA	GM(1,1)	VERHULST	DGM(1,1)	DGM(2,1)
MAPE	8.70%	15.05%	16.07%	15.59%	27.16%
MSE	1.886	3.520	2.266	3.765	9.572
RMSE	1.373	1.876	1.505	1.940	3.094
MAD	0.983	1.492	1.018	1.562	2.346
Evaluation	Excellent	Good	Reasonable	Reasonable	Poor