Table 2.
Distribution of attribute values in the complete annotated dataset.
| Attribute | Value | Training set | Test set | All corpus | |||
|---|---|---|---|---|---|---|---|
| Semantic type | Problem | 1504 | (45.1%) | 463 | (45.0%) | 1967 | (45.1%) |
| Test | 880 | (26.4%) | 295 | (28.6%) | 1175 | (26.9%) | |
| Occurrence | 542 | (16.3%) | 163 | (15.8%) | 705 | (16.2%) | |
| Treatment | 409 | (12.3%) | 109 | (10.6%) | 518 | (11.9%) | |
| DocTimeRel | Overlap | 1565 | (46.9%) | 400 | (38.8%) | 1965 | (45.0%) |
| Before | 1222 | (36.6%) | 437 | (42.4%) | 1659 | (38.0%) | |
| After | 517 | (15.5%) | 185 | (18.0%) | 702 | (16.1%) | |
| Before/overlap | 31 | (0.9%) | 8 | (0.8%) | 39 | (0.9%) | |
| Polarity | Positive | 2882 | (86.4%) | 915 | (88.8%) | 3797 | (87.0%) |
| Negative | 453 | (13.6%) | 115 | (11.2%) | 568 | (13.0%) | |
| Modality | Actual | 3020 | (90.6%) | 918 | (89.1%) | 3938 | (90.2%) |
| Hypothetical | 116 | (3.5%) | 54 | (5.2%) | 170 | (3.9%) | |
| Hedged | 107 | (3.2%) | 35 | (3.4%) | 142 | (3.3%) | |
| Generic | 92 | (2.8%) | 23 | (2.2%) | 115 | (2.6%) | |
| Experiencer | Patient | 3070 | (92.1%) | 961 | (93.3%) | 4031 | (92.3%) |
| Other | 265 | (7.9%) | 69 | (6.7%) | 334 | (7.7%) | |