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

Table 4

The predicted results of three models.

Month	Actual value in 2019	Forecasting value
		NIPGSM (1, 1)	GM (1, 1)	Holt–Winters
1	8220	7926.10	8431.03	7579.50
2	8261	8023.86	8564.26	7502.06
3	8335	8125.67	8699.59	7663.82
4	8293	8220.82	8837.07	7820.92
5	8407	8344.33	8976.72	8006.78
6	8459	8495.88	9118.57	8221.81
7	8421	8625.17	9262.67	8417.59
8	8476	8791.48	9409.04	8651.93
MAPE		2.14%	6.12%	5.05%
RMSE		205.59	602.50	488.23