Simultaneous-Fault Diagnosis of Gas Turbine Generator Systems Using a Pairwise-Coupled Probabilistic Classifier

Table 6

Evaluation of different combinations of techniques using the best model parameters obtained.

Classifier	Feature extraction	Strategy	Experiment no.	Decision threshold	Accuracies for test cases (𝐹me)
					Single-faults	Simultaneous-faults	Overall faults
PNN	None	One-versus-all	1	𝜀 = 0.76	0.8364	0.7156	0.7576
	WPT + TDSF + KPCA	One-versus-all	2	𝜀 = 0.76	0.8646	0.7246	0.8121
RVM	None	One-versus-all	3	𝜀 = 0.67	0.8299	0.7464	0.8125
	WPT + TDSF + KPCA	One-versus-all	4	𝜀 = 0.67	0.8960	0.7964	0.8536
PCPNN	None	Pairwise coupling	5	𝜀 = 0.76	0.8923	0.7364	0.7824
	WPT + TDSF + KPCA	Pairwise coupling	6	𝜀 = 0.76	0.9198	0.7526	0.8661
PCRVM	None	Pairwise coupling	7	𝜀 = 0.67	0.8795	0.7843	0.8497
	WPT + TDSF + KPCA	Pairwise coupling	8	𝜀 = 0.67	0.9336	0.8364	0.9129