Table 3.
Sensitivity and specificity of various classifiers trained on the hepatobiliary data set for difference percentages of under-sampling
|
Under-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 |
| 10 |
0.89 |
0.76 |
0.93 |
0.65 |
0.91 |
0.75 |
0.90 |
0.80 |
38 |
| 20 |
0.89 |
0.75 |
0.93 |
0.63 |
0.91 |
0.73 |
0.91 |
0.79 |
34 |
| 30 |
0.89 |
0.76 |
0.94 |
0.61 |
0.93 |
0.72 |
0.90 |
0.78 |
30 |
| 40 |
0.89 |
0.73 |
0.93 |
0.60 |
0.92 |
0.69 |
0.91 |
0.77 |
25 |
| 50 |
0.90 |
0.70 |
0.93 |
0.58 |
0.92 |
0.71 |
0.91 |
0.76 |
21 |
| 60 |
0.90 |
0.71 |
0.94 |
0.56 |
0.92 |
0.72 |
0.92 |
0.73 |
17 |
| 70 |
0.91 |
0.67 |
0.95 |
0.55 |
0.91 |
0.72 |
0.92 |
0.70 |
13 |
| 80 |
0.92 |
0.64 |
0.94 |
0.49 |
0.92 |
0.73 |
0.92 |
0.68 |
9 |
| 90 |
0.94 |
0.52 |
0.91 |
0.60 |
0.93 |
0.67 |
0.93 |
0.59 |
5 |
| 100 | 0.99 | 0.12 | 0.99 | 0.07 | 0.99 | 0.03 | 0.99 | 0.14 | 0.5 |