| 指标 | 直接求解参数的GM(1,1) | 邓聚龙参数估计模型 | GM(2,1)模型 |
| a | 0.0046 | −0.0990 | 14,760.7278 |
| b | 1694.0544 | 6876.2657 | −2159.8732 |
| C1 | -- | -- | −777.1901 |
| C2 | -- | -- | 3555.7201 |
| R2 | 0.9491 | 0.9307 | 0.6897 |
| RMSE | 730.4144 | 1989.8675 | 3377.6188 |
| 2018年真实值 | 26,219.0000 | 26,219.0000 | 26,219.0000 |
| 2018年预测值 | 27,145.6492 | 27,727.4201 | 31,925.7531 |