Prediction of China’s Housing Price Based on a Novel Grey Seasonal Model

Table 7

The predicted results of three models.

Month	Actual value in 2019	Forecasting value
		NIPGSM (1, 1)	GM (1, 1)	Holt–Winters
1	13568	13463.74	14053.51	12992.25
2	13772	13632.72	14258.28	12744.60
3	13920	13757.25	14466.03	12865.50
4	14086	13865.94	14676.80	12971.64
5	14207	14022.74	14890.65	13122.89
6	14701	14021.89	15107.61	13126.65
7	14704	14109.63	15327.74	13213.38
8	14695	14304.64	15551.07	13400.65
MAPE		2.14%	4.11%	8.06%
RMSE		371.82	599.38	1188.06