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

Table 7

Relative error values of China’s GDP data by the five grey models (%).

Year	M1	M2	M3	M4	New model
2012	0	0	0	0	0
2013	0.02	0.03	−0.02	−0.03	−0.03
2014	−0.33	−0.32	−0.16	−0.15	−0.15
2015	0.22	0.24	−0.42	−0.45	−0.45
2016	−0.15	−0.14	−0.02	0.02	0.02
2017	−3.28	−3.27	−3.26	−3.21	−3.21
2018	−5.32	−5.31	−5.45	−5.38	0.60
MAPE	1.55	1.54	1.48	1.45	0.65