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

Table 5

Confusion matrix for the classification of training and external dataset using the PCA-LDA method.

Confusion matrix	Actual				Accuracy
	Label	OO1	OO2	OO3	Calibration	Cross-validation
Predicted training set	OO1	21	0	0	100%	100%
	OO2	0	21	0
	OO3	0	0	21
		OO1	OO2	OO3	External validation
Predicted external set	OO1	6	0	0	100%
	OO2	0	6	0
	OO3	0	0	6