观测 时序 | 实际值 | 无偏GM(1,1)模型 | GM(1,1)模型 | 本文模型 | 备注 | |||
预测值 | 残差值 | 预测值 | 残差值 | 预测值 | 残差值 | |||
1 | 1.28 | 0 | 0 | 0 | 0 | 0 | 0 | 模拟值 |
2 | 1.85 | 2.144 | −0.294 | 2.052 | −0.202 | 1.870 | −0.020 | |
3 | 2.32 | 2.471 | −0.1507 | 2.364 | −0.044 | 2.333 | −0.013 | |
4 | 2.90 | 2.848 | 0.052 | 2.724 | 0.176 | 2.796 | 0.104 | |
5 | 3.19 | 3.282 | −0.092 | 3.139 | 0.051 | 3.260 | −0.070 | |
6 | 3.67 | 3.783 | −0.113 | 3.616 | 0.054 | 3.723 | −0.053 | |
7 | 4.21 | 4.359 | 0.149 | 4.167 | 0.043 | 4.187 | 0.023 | |
8 | 4.70 | 5.024 | −0.324 | 4.801 | −0.101 | 4.650 | −0.050 |