Table 2 CRF Model Optimization Result for Entity Detection
| Â | Precision | Recall | F-Score | Number of occurrences |
|---|---|---|---|---|
ADR | 88.05% | 68.30% | 76.93 | 2,469 |
Animal | 73.33% | 50.00% | 59.46 | 15 |
DrugClass | 0.00% | 0.00% | 0.00 | 1 |
Factor | 82.69% | 33.33% | 47.51 | 52 |
Negation | 57.14% | 28.57% | 38.10 | 7 |
Severity | 73.55% | 29.87% | 42.48 | 121 |