| Method | MAE | |
| My method | Gaussian | 4.39 |
| Triangle | 4.88 | |
| CPNN | Gaussian | 4.76 |
| Triangle | 5.07 | |
| OHRank | 6.27 | |
| AGES | 6.77 | |
| WAS | 8.06 | |
| AAS | 14.83 | |
| kNN | 8.24 | |
| BP | 11.85 | |
| C4.5 | 9.34 | |
| SVM | 7.25 | |
| ANFIS | 8.86 | |