Rapid Analytical Method to Characterize the Freshness of Olive Oils Using Fluorescence Spectroscopy and Chemometric Algorithms

Table 3

External validation of the classification of PLS-DA models for the fluorescence spectra of the three categories of olive oil.

Confusion matrix	Label	OO1	OO2	OO3	Accuracy of external validation (%)
Predicted external set	OO1	6	0	0	100
	OO2	0	6	0
	OO3	0	0	6