Table 1.

Distribution of data and labels for training, validation, and test in the ISBI 2017 and the PH2 datasets.

Dataset.	Training Data				Validation Data				Test Data					Total
Label	B	M	SK	Total	B	M	SK	Total	B	M	SK	AT	Total
ISBI 2017	1375	374	254	2000	78	30	42	150	393	197	90	*	600	2750
PH2	*	*	*	*	*	*	*	*	80	40	*	80	200	200
Total				2000				150					800	2950

B-Benign, M-Melanoma, SK-Seborrheic keratosis, AT-Atypical nevus, * there is no data in this field.