Table 8.
Corpus | Feature | Positive | Negative | Uncertain | Alter-Ass'n. | |
---|---|---|---|---|---|---|
Challenge | Lexical Context | ±4 word window | 0.97 | 0.90 | 0.58 | 0.49 |
Section headings | 0.90 | 0 | 0 | 0.82 | ||
±4 word window + section headings | 0.97 | 0.90 | 0.58 | 0.86 | ||
Syntactic Context | ±2 link window | 0.94 | 0.70 | 0.49 | 0.47 | |
Verbs | 0.90 | 0.21 | 0.05 | 0.38 | ||
±2 link window + verbs | 0.94 | 0.72 | 0.48 | 0.52 | ||
CMC | Lexical Context | ±4 word window | 0.98 | 0.95 | 0.89 | 0.42 |
Section headings | 0.85 | 0 | 0 | 0 | ||
±4 word window + section headings | 0.98 | 0.95 | 0.89 | 0.42 | ||
Syntactic Context | ±2 link window | 0.92 | 0.61 | 0.73 | 0.13 | |
Verbs | 0.88 | 0.21 | 0.53 | 0 | ||
±2 link window + verbs | 0.92 | 0.62 | 0.75 | 0.25 |
CMC = Computational Medicine Center.