Joint Feature and Model Selection for SVM Fault Diagnosis in Solid Oxide Fuel Cell Systems

Table 3

Residuals and OAs, with the number of features increasing from 1 to 10, for the constant-current case. Training including a mixture of error magnitudes.

	Residual subset	Overall accuracy (OA)
		Test-set max. error			OAavg
		2%	4%	6%
1	2	0.61	0.59	0.58	0.59
2	2, 3	0.76	0.76	0.72	0.75
3	2, 3, 4	0.83	0.83	0.79	0.82
4	2, 3, 4, 7	0.90	0.84	0.75	0.83
5	1, 2, 3, 4, 7	0.90	0.81	0.72	0.81
6	1, 2, 3, 4, 7, 8	0.90	0.83	0.72	0.82
7	1, 2, 3, 4, 5, 7, 8	0.92	0.81	0.73	0.82
8	1, 2, 3, 4, 5, 7, 8, 9	0.92	0.80	0.73	0.82
9	1, 2, 3, 4, 5, 6, 7, 8, 9	0.69	0.68	0.63	0.67
10	1, 2, 3, 4, 5, 6, 7, 8, 9, 10	0.76	0.75	0.72	0.74