Table 4.
Results of three grey models in validation Case 1.
| Raw data | GM(1,1) model | APE (%) | GRM (1,1) | APE (%) | GERM (1,1,) | APE (%) |
|---|---|---|---|---|---|---|
| 1 | 1.0000 | 0.0000 | 1.0000 | 0.0000 | 1.0000 | 0.0000 |
| 2 | 2.4658 | 23.2912 | 1.9385 | -3.0731 | 1.9994 | -0.0312 |
| 3 | 3.0619 | 2.0644 | 2.9302 | -2.3283 | 3.0019 | 0.0633 |
| 4 | 3.8021 | -4.9464 | 3.9194 | -2.0157 | 4.0041 | 0.1025 |
| 5 | 4.7213 | -5.5739 | 4.9133 | -1.7336 | 5.0061 | 0.1201 |
| 6 | 5.8627 | -2.2889 | 5.9161 | -1.3993 | 6.0075 | 0.125 |
| 7 | 7.2802 | 3.9993 | 6.9302 | -0.9970 | 7.0088 | 0.1257 |
| MAPESIM(%) | 7.0273 | 1.9245 | 0.0944 | |||
| 8 | 9.0399 | 12.9983 | 7.9578 | -0.528 | 8.0097 | 0.1213 |
| 9 | 11.2252 | 24.7247 | 9.0002 | 0.0021 | 9.0103 | 0.1144 |
| 10 | 13.9389 | 39.3890 | 10.0587 | 0.5874 | 10.0106 | 0.1061 |
| MAPEPRE(%) | 25.704 | 0.3725 | 0.1139 |