Research Article
Rapid Analytical Method to Characterize the Freshness of Olive Oils Using Fluorescence Spectroscopy and Chemometric Algorithms
Table 2
Statistical parameters of the built models with and without data preprocessing (PLS-DA).
| Label | Preprocessing | Number of latent variable | Calibration | Cross validation | R-square (%) | RMSEC | R-square (%) | RMSECV |
| OO1 | Without preprocessing | 3 LV | 91 | 0.14 | 89 | 0.16 | OO2 | 94 | 0.12 | 93 | 0.13 | OO3 | 89 | 0.16 | 89 | 0.17 | OO1 | Smoothing (Savitzky and Golay) | 3 LV | 90 | 0.15 | 89 | 0.16 | OO2 | 94 | 0.12 | 94 | 0.12 | OO3 | 89 | 0.16 | 87 | 0.17 | OO1 | Detrend (polynomial 1) | 3 LV | 91 | 0.15 | 86 | 0.18 | OO2 | 95 | 0.11 | 90 | 0.15 | OO3 | 89 | 0.16 | 87 | 0.17 |
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