Table 4. The confusion matrix on duct level Hematoxylin and Eosin stained images.

Prediction
Actual	Normal	UDH	LG-DCIS	HG-DCIS
Normal	9	4	0	1
UDH	2	8	2	3
LG-DCIS	1	1	18	1
HG-DCIS	0	2	7	10

4 groups: Accuracy 65.2% (kappa index 0.53). Normal/Benign vs DCIS: Accuracy 85.5% (kappa index 0.70).