Table 3 Optimal parameters determined for Gap 1st derivative cross validation experiments
Product ratio | Spectral region (nm) | Pathlength correction (1st derivative) | SECV | Factors | R2 | PRESS | Number of outliers (spectral, residual outliers with F test uncertainty 99%) |
|---|---|---|---|---|---|---|---|
CA/CD | 1400–1820 1840–2300 | SNV-detrend | 0.09 | 7 | 0.69 | 1.21 | 4 |
CA/CM | 1300–1820 1840–2300 | SNV-detrend | 0.03 | 4 | 0.50 | 0.11 | 19 |
CD/CM | 1400–1820 1840–2300 | MSC | 0.07 | 6 | 0.66 | 0.72 | 5 |