Table 5.
Sensitivity and specificity of various classifiers trained on the hepatobiliary data set for difference percentages of over-sampling
|
Over-sampling |
SVM |
MyC |
RIPPER |
C4.5 |
Imbalance |
||||
|---|---|---|---|---|---|---|---|---|---|
| (%) | Sens. | Spec. | Sens. | Spec. | Sens. | Spec. | Sens. | Spec. | ratio |
| 0 |
0.89 |
0.77 |
0.92 |
0.68 |
0.91 |
0.71 |
0.90 |
0.79 |
42 |
| 100 |
0.90 |
0.72 |
0.96 |
0.52 |
0.94 |
0.64 |
0.93 |
0.73 |
21 |
| 200 |
0.90 |
0.70 |
0.96 |
0.47 |
0.96 |
0.56 |
0.94 |
0.67 |
14 |
| 300 |
0.91 |
0.70 |
0.97 |
0.44 |
0.96 |
0.54 |
0.95 |
0.65 |
11 |
| 400 |
0.91 |
0.71 |
0.98 |
0.45 |
0.97 |
0.50 |
0.95 |
0.63 |
8 |
| 500 |
0.92 |
0.69 |
0.98 |
0.43 |
0.97 |
0.48 |
0.95 |
0.62 |
7 |
| 600 |
0.92 |
0.68 |
0.97 |
0.35 |
0.96 |
0.47 |
0.95 |
0.61 |
6 |
| 700 |
0.92 |
0.67 |
0.98 |
0.34 |
0.97 |
0.47 |
0.95 |
0.60 |
5 |
| 800 |
0.92 |
0.65 |
0.97 |
0.34 |
0.97 |
0.47 |
0.95 |
0.61 |
5 |
| 900 |
0.93 |
0.65 |
0.97 |
0.34 |
0.97 |
0.45 |
0.95 |
0.59 |
4 |
| 1000 | 0.93 | 0.64 | 0.97 | 0.35 | 0.96 | 0.44 | 0.95 | 0.59 | 4 |