Table 2.
Sensitivity and specificity results of various classifiers trained on the hepatobiliary and the acute renal failure data sets, with and without set expansion
| |
Set |
Imbalance |
SVM |
C4.5 |
MyC |
RIPPER |
||||
|---|---|---|---|---|---|---|---|---|---|---|
| Data set | expansion | ratio | Sens | Spec | Sens | Spec | Sens | Spec | Sens | Spec |
| Hepatobiliary |
No |
0.5 |
0.99 |
0.03 |
0.99 |
0.03 |
0.99 |
0.07 |
0.99 |
0.04 |
| |
Yes |
42 |
0.89 |
0.77 |
0.90 |
0.79 |
0.92 |
0.69 |
0.91 |
0.71 |
| Acute renal failure |
No |
16 |
0.62 |
0.92 |
0.69 |
0.88 |
0.69 |
0.90 |
0.71 |
0.89 |
| Yes | 1363 | 0.39 | 0.98 | - | - | 0.45 | 0.99 | 0.41 | 0.98 | |