A Novel Optimized Nonlinear Grey Bernoulli Model for Forecasting China’s GDP

Table 2

Results of optoelectronic components from the two models.

Year	Actual data	NGBM(1,1),		Optimized NGBM(1,1),
		Prediction	RPE (%)	Prediction	RPE (%)
1994	20.3	20.3	0.00	20.3	0.00
1995	29.5	29.503	−0.01	29.482	−0.06
1996	31.1	30.812	0.92	30.894	−0.66
1997	37.2	36.064	3.05	36.708	−1.32
1998	38.2	43.917	−14.97	45.385	18.81
1999	57.5	54.534	5.16	57.189	−0.54
MAPE (%)			4.82		4.28