Research Article
Grey Forecast Model with Aging Fractional Accumulation and Its Properties
Table 2
The fitting and predicted values of grey models on different samples.
| | Serial number | Actual value | GM6 (1, 1) | GM5 (1, 1) | GM4 (1, 1) | AGM (1, 1) |
| | 2000 | 132.4 | 132.4 | | | 132.40 | | 2001 | 144.6 | 142 | 144.6 | | 142.75 | | 2002 | 156.3 | 157.3 | 155.3 | 156.3 | 155.57 | | 2003 | 173.7 | 174.2 | 173 | 172.1 | 171.45 | | 2004 | 190.2 | 193 | 192.8 | 192.5 | 191.10 | | 2005 | 216.7 | 213.8 | 214.8 | 215.3 | 215.41 | | MAPE | | 1.12 | 0.81 | 0.93 | 0.69 | | MAE | | 1.63 | 1.24 | 1.33 | 1.17 | | RMSE | | 2.01 | 1.54 | 1.57 | 1.38 | | 2006 | 249.4 | 236.8 | 239.4 | 240.8 | 245.50 | | MAPE | | 5.04 | 4.03 | 3.46 | 1.57 | | MAE | | 12.6 | 10 | 8.6 | 3.90 |
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The smallest values of these model errors are in bold.
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