Table 4.
Sensitivity and specificity of various classifiers trained on the acute renal failure 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 |
0.62 |
0.92 |
0.69 |
0.90 |
0.71 |
0.89 |
0.69 |
0.88 |
16 |
| 10 |
0.64 |
0.90 |
0.74 |
0.89 |
0.75 |
0.89 |
0.69 |
0.87 |
14 |
| 20 |
0.64 |
0.89 |
0.75 |
0.83 |
0.75 |
0.88 |
0.74 |
0.86 |
13 |
| 30 |
0.66 |
0.88 |
0.76 |
0.82 |
0.76 |
0.88 |
0.75 |
0.85 |
11 |
| 40 |
0.70 |
0.85 |
0.75 |
0.87 |
0.74 |
0.88 |
0.75 |
0.85 |
9 |
| 50 |
0.74 |
0.81 |
0.76 |
0.80 |
0.77 |
0.76 |
0.76 |
0.82 |
8 |
| 60 |
0.82 |
0.72 |
0.77 |
0.81 |
0.84 |
0.68 |
0.83 |
0.82 |
6 |
| 70 |
0.83 |
0.67 |
0.83 |
0.70 |
0.83 |
0.61 |
0.86 |
0.77 |
5 |
| 80 |
0.86 |
0.56 |
0.89 |
0.49 |
0.90 |
0.44 |
0.90 |
0.45 |
3 |
| 90 | 0.92 | 0.41 | 0.90 | 0.43 | 0.89 | 0.43 | 0.92 | 0.39 | 2 |