An Intelligence Optimized Rolling Grey Forecasting Model Fitting to Small Economic Dataset

Table 4

The forecasting data and evaluation metrics produced by PRGM(1, 1) and 𝑃 value RM-GM(1, 1).

Year	Actual value	𝑃 value RM-GM(1, 1)		PRGM(1, 1)
		Predictive value	Error	Predictive value	Error
Semiconductor industry production
1998	2834	3020	6.56	2830	0.1519
1999	4235	3749	11.48	4096	3.2841
2000	7144	6546	8.37	6792	4.9309
2001	5269	6624	25.72	6412	21.6878
2002	6529	6498	0.48	7302	11.839
MAPE (%)			10.52		8.3787