Prediction of Regional Logistics Heat and Coupling Development between Regional Logistics and Economic Systems

Table 3

Prediction results and errors of different models.

Year	Ground truth	GM (1, 1)		BP neural network		Composite model
		Prediction	MSE	Prediction	MSE	Prediction	MSE
2010	8635	8672.25	0.431	8689.71	0.634	8676.64	0.482
2011	10478	12603.72	20.287	9919.56	−5.330	11632.12	11.015
2012	12534	17521.83	39.794	10819.24	−13.681	11941.36	−4.728
2013	14912	18654.31	25.096	11728.61	−21.348	12896.65	−13.515
2014	16253	20156.74	24.019	14849.68	−8.634	15794.72	−2.820
2015	18165	22513.95	23.941	16952.75	−6.674	18984.24	4.510
2016	22789	23891.56	4.838	24195.63	6.172	23673.36	3.881
2017	26453	25234.79	−4.605	28442.12	7.519	27984.21	5.788
2018	31916	27919.32	−12.522	29891.48	−6.343	28561.25	−10.511
2019	32453	30917.08	−4.733	34972.61	7.764	33849.64	4.304
2020	36351	32156.26	−11.540	37156.25	2.215	36894.76	1.496