Table 3.

Numbers of training and test data.

BI-RADS	Number of Training Data	Number of Test Data
0	42,565	10,641
1	51,964	14,847
2	48,294	13,322
3	47,470	12,566
4A	25,475	6369
4B	28,993	7248
4C	36,021	9005
5	46,741	11,685
Sum	327,523	85,683