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Table 2
Metrics for chlorophyll (Chl.), anthocyanin (Ant.), ºBrix and puncture (P.) force (N) using the total grape reconstructed spectra for the Loureiro and Vinhão cultivars.
| Grape Parameters | R2 | MSE | MAPE (%) |
|---|---|---|---|
| Loureiro | |||
| Chl. (a.u.) | 0.98 | 0.96 | 13.6 |
| ºBrix | 0.97 | 2.88 | 14.09 |
| P. force (N) | 0.83 | 1.89 | 36.39 |
| Vinhão | |||
| Ant. (a.u.) | 0.93 | 0.92 | 18.73 |
| Chl. (a.u.) | 0.93 | 0.61 | 21.57 |
| ºBrix | 0.98 | 2.28 | 14.43 |
| P. force (N) | 0.91 | 1.77 | 24.54 |
Mean Square Error (MSE); Mean Absolute Prediction Error (MAPE).
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