Table 2.

Measurements (min, max, mean, SD—standard deviation) of indices: similarity (SI), overlap fraction (OF), overlap value (OV), and extra fraction (EF) for segmentations carried out on mammograms from the DDSM database, specifically 100 benign cases, 100 malignant cases, and jointly on all analyzed 200 ROIs

	SI	OF	OV	EF		SI	OF	OV	EF
Mean	0.831	0.781	0.735	0.174	Mean	0.780	0.733	0.682	0.223
SD	0.104	0.080	0.091	0.142	SD	0.123	0.109	0.101	0.204
Min	0.531	0.482	0.395	0.018	Min	0.432	0.415	0.341	0.021
Max	0.952	0.902	0.842	0.583	Max	0.924	0.865	0.825	0.653
Benign: computer method versus expert					Malignant: computer method versus expert
	SI	OF	OV	EF
Mean	0.805	0.757	0.708	0.198
SD	0.113	0.094	0.096	0.173
Min	0.432	0.415	0.341	0.018
Max	0.952	0.902	0.842	0.653
Benign and malignant: computer method versus expert