Table 2.
10-Fold Cross Validation in the Training Set Accuracy Using Different Feature Sets
| Feature Sets | Anchor Points |
Anchor Relation |
|||||
|---|---|---|---|---|---|---|---|
| Admission (330) | Discharge (101) | Previous TIMEX (228) | Previous Absolute TIMEX (221) | After (287) | Before (69) | Equal/During (256) | |
| All features | 79.01 | 91.67 | 67.53 | 75.00 | 92 | 72.9 | 89.3 |
| (A) | 74.52 | 90.71 | 65.54 | 76.44 | 91.6 | 75.7 | 89.7 |
| (B) | 76.76 | 91.19 | 64.74 | 77.88 | 93.4 | 71.4 | 84.6 |
| (B) + (C) | 75.80 | 88.62 | 62.34 | 76.44 | 83.6 | 74.3 | 90.5 |
| (B) + (D1) + (D2) | 77.56 | 92.47 | 68.91 | 75.16 | 93.4 | 81.4 | 92.1 |
| (B) + (D3) + (D4) | 78.53 | 91.99 | 68.91 | 75.64 | 91.3 | 77.1 | 90.1 |
| (B) + (D3) + (D4) + (D5) | 78.85 | 91.99 | 68.75 | 76.60 | 90.9 | 77.1 | 90.1 |
| (B) + (D1) + (D2) + (E) | 78.85 | 91.67 | 67.47 | 75.16 | 93.4 | 80.0 | 90.1 |
The number of instances for each class is shown in parentheses in the first row.