Comparison of an Electronic Nose Based on Ultrafast Gas Chromatography, Comprehensive Two-Dimensional Gas Chromatography, and Sensory Evaluation for an Analysis of Type of Whisky

Table 2

Confusion matrices and confusion tables for results obtained by the use of GC × GC-TOFMS, e-nose, and sensory analysis.

	GC × GC-TOFMS				E-nose				Sensory analysis
	Model results
	Confusion matrix
Class	TP	FP	TN	FN	TP	FP	TN	FN	TP	FP	TN	FN
Bourbon	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000
Scotch	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000
Irish	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000
	Confusion table
Predicted as	Bourbon		Scotch	Irish	Bourbon		Scotch	Irish	Bourbon		Scotch	Irish
Bourbon	8		0	0	48		0	0	4		0	0
Scotch	0		12	0	0		72	0	0		6	0
Irish	0		0	8	0		0	48	0		0	4
	Cross-validation results
	Confusion matrix
Class	TP	FP	TN	FN	TP	FP	TN	FN	TP	FP	TN	FN
Bourbon	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	0.250	0.300	0.700	0.000
Scotch	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	0.500	0.375	0.725	0.000
Irish	1.000	0.000	1.000	0.000	1.000	0.000	1.000	0.000	0.250	0.300	0.700	0.000
	Confusion table
Predicted as	Bourbon		Scotch	Irish	Bourbon		Scotch	Irish	Bourbon		Scotch	Irish
Bourbon	8		0	0	48		0	0	1		1	2
Scotch	0		12	0	0		72	0	2		3	1
Irish	0		0	8	0		0	48	1		2	1