Table 1 The error analysis of the price forecasting of cowpea
The market | Dayanglu Agricultural and Sideline Products Wholesale Market, Chaoyang District, Beijing | Shunxin Shimen Agricultural Wholesale Market, Shunyi District, Beijing | ||
|---|---|---|---|---|
MSE | MAE | MSE | MAE | |
AR model | 2.871 | 1.255 | 1.918 | 1.029 |
Grey prediction model | 3.336 | 1.357 | 1.067 | 0.703 |
Garch model | 5.430 | 1.785 | 1.649 | 0.897 |
Time model | 1.476 | 1.070 | 1.013 | 0.673 |
Space model | 1.735 | 1.735 | 0.683 | 0.683 |
Mixed model | 1.321 | 1.008 | 0.879 | 0.670 |
Warning model | 0.884 | 0.876 | 0.764 | 0.727 |
The market | Chengbei Huilongguan commodity transaction market | Baliqiao Agricultural Wholesale Market, Tongzhou District, Beijing | ||
|---|---|---|---|---|
MSE | MAE | MSE | MAE | |
AR model | 1.849 | 1.058 | 2.545 | 1.312 |
Grey prediction model | 4.673 | 1.705 | 2.460 | 1.210 |
Garch model | 19.282 | 3.742 | 3.605 | 1.537 |
Time model | 1.849 | 1.058 | 1.163 | 0.868 |
Space model | 2.811 | 2.811 | 1.774 | 1.774 |
Mixed model | 1.730 | 1.013 | 1.179 | 0.897 |
Warning model | 1.815 | 1.791 | 0.482 | 0.482 |