Table 4.

Melanoma detection performance using color-signal-dependent features of unweighted graphs. The skin lesion feature descriptors include local features (C), global features (G), graph Fourier transform features (GFT), the combination of the three feature types (C+G+GFT) and their combination with conventional features (All)

		GFT	C+G+GFT	GFT+Conv	All
	AC	50.52	60.73	89.62	88.93
SVM	AUC	53.96	63.95	99.03	98.31
(RBF)	SN	50.17	56.75	99.65	100.0
	SP	54.67	65.4	81.31	79.93
	AC	52.08	55.54	77.34	77.68
SVM	AUC	54.54	49.99	89.21	87.13
(Sigmoid)	SN	57.09	62.63	93.43	91.7
	SP	51.21	54.67	66.44	63.67
	AC	52.25	58.13	91.18	92.73
SVM	AUC	54.54	49.99	89.21	87.13
(Poly)	SN	18.69	29.76	98.62	95.5
	SP	95.5	88.93	85.47	92.04
	AC	51.73	56.4	84.26	86.51
KNN	AUC	49.61	57.9	96.74	94.58
	SN	40.48	44.98	100.0	98.27
	SP	63.67	71.28	68.51	76.82
	AC	50.69	60.38	89.79	89.79
MLP	AUC	53.31	63.22	99.3	98.84
	SN	47.75	57.09	100.0	100.0
	SP	58.48	68.51	80.97	81.66
	AC	50.35	52.08	97.58	96.89
RF	AUC	53.85	62.94	99.92	99.71
	SN	4.498	5.882	100.0	100.0
	SP	98.62	99.65	95.16	94.81