Table 2.
OPLS‐DA calibration and validation results: correct regional classification rates of the oils samples using quality parameters and spectral data
| Data matrix | Member | OPLS‐DA Model | |||
|---|---|---|---|---|---|
| C | N | S | % CC | ||
| Quality parameters | |||||
| Calibration | |||||
| C | 15 | 15 | 0 | 0 | 100 |
| N | 15 | 2 | 13 | 0 | 87 |
| S | 15 | 0 | 0 | 15 | 100 |
| Total | 45 | 16 | 14 | 15 | 96 |
| Validation | |||||
| C | 5 | 5 | 0 | 0 | 100 |
| N | 5 | 1 | 4 | 0 | 80 |
| S | 5 | 0 | 1 | 4 | 80 |
| Total | 15 | 6 | 5 | 4 | 87 |
| UV‐vis_untreated | |||||
| Calibration | |||||
| C | 15 | 15 | 0 | 0 | 100 |
| N | 15 | 1 | 14 | 0 | 93 |
| S | 15 | 0 | 0 | 15 | 100 |
| Total | 45 | 16 | 14 | 15 | 98 |
| Validation | |||||
| C | 5 | 5 | 0 | 0 | 100 |
| N | 5 | 1 | 4 | 0 | 80 |
| S | 5 | 0 | 0 | 5 | 100 |
| Total | 15 | 6 | 4 | 5 | 93 |
| UV‐vis_SNV+2der | |||||
| Calibration | |||||
| C | 15 | 15 | 0 | 0 | 100 |
| N | 15 | 0 | 15 | 0 | 100 |
| S | 15 | 0 | 0 | 15 | 100 |
| Total | 45 | 15 | 15 | 15 | 100 |
| Validation | |||||
| C | 5 | 5 | 0 | 0 | 100 |
| N | 5 | 0 | 5 | 0 | 100 |
| S | 5 | 0 | 0 | 5 | 100 |
| Total | 15 | 5 | 5 | 5 | 100 |
%CC: percentage of correct classification; C, central; N, North; S, South.