Compound Grey-Logistic Model and Its Application

Table 4

GDP in Jiangsu Province (unit: 100 million yuan), forecast value, and forecast accuracy evaluation.

Year	Actual data	Grey forecast	APE (%)	Logistic forecast	APE (%)	Grey-logistic forecast	APE (%)
2010	41384
2011	48839	50063	2.50	48839	0.00
2012	53702	55200	2.79	50053	6.79	53977	0.51
2013	59349	60865	2.55	50259	15.32	59516	0.28
2014	64831	67111	3.52	50294	22.42	65623	1.22
2015	71256	73998	3.85	50300	29.41	72358	1.55
2016	77351	81591	5.48	50301	34.97	79783	3.14
2017	85870	89964	4.77	50301	41.42	87971	2.45
2018	93208	99197	6.43	50301	46.03	96998	4.07
2019	99632	109376	9.78	50301	49.51	106952	7.35
MAPE			4.63		27.32		2.57
H(π)	0.894	0.892		0.903		0.892