Combination of an E-Nose and an E-Tongue for Adulteration Detection of Minced Mutton Mixed with Pork

Table 5

Comparison results of discriminant analysis for different data fusion methods for responses of E-nose and E-tongue to minced mutton adulterated with pork.

Fusion methods	Original sensor fusion method				Combination of extracted data
	Normalization		Feature extraction		Extraction of principle components
			Stepwise LDA	Extraction of principle components
Bayesian discriminant analysis	Number of misclassified	0	0	0	0
	Percentage of misclassified	0	0	0	0
CDA-linear discriminant function	Number of misclassified	1 (20% to 40%)	1 (20% to 40%)	2 (40% to 20%)	0
	Percentage of misclassified	0.83%	0.83%	1.67%	0
CDA-quadratic discriminant function	Number of misclassified	1 (40% to 20%)	1 (40% to 20%)	2 (1 was 40% to 20%; 1 was 20% to 40%)	0
	Percentage of misclassified	0.83%	0.83%	1.67%	0
Averaged		0.55%	0.55%	1.11%	0