| Spectra | Data set | Hard PLS-DA | Soft PLS-DA | ||||
| Total Sensitivity (%) | Total Specificity (%) | Total Efficiency (%) | Total Sensitivity (%) | Total Specificity (%) | Total Sensitivity (%) | ||
| RAW | Calibration | 91 | 91 | 91 | 97 | 96 | 94 |
| Prediction | 85 | 85 | 85 | 81 | 95 | 87 | |
| SG | Calibration | 76 | 76 | 76 | 97 | 91 | 94 |
| Prediction | 74 | 74 | 74 | 88 | 89 | 88 | |
| SG-D1 | Calibration | 76 | 76 | 76 | 97 | 94 | 95 |
| Prediction | 75 | 75 | 75 | 86 | 91 | 90 | |
| SNV | Calibration | 85 | 85 | 85 | 96 | 82 | 89 |
| Prediction | 75 | 75 | 75 | 82 | 80 | 81 | |