Table 3. Feature contribution: F1-measure (%).
| Features | Quantitative | Qualitative |
|---|---|---|
| 1. Lexical | 90.3 | 78.3 |
| 2. Concept position | 57.2 | 77.2 |
| 3. Related concept | 78.2 | 80.2 |
| 4. Section | 80.9 | 94.0 |
| 1 + 2 | 91.9 | 85.9 |
| 1 + 2 + 3 | 91.6 | 86.9 |
| All (1 + 2 + 3 + 4) | 95.6 | 94.2 |
| Features | Quantitative | Qualitative |
|---|---|---|
| 1. Lexical | 90.3 | 78.3 |
| 2. Concept position | 57.2 | 77.2 |
| 3. Related concept | 78.2 | 80.2 |
| 4. Section | 80.9 | 94.0 |
| 1 + 2 | 91.9 | 85.9 |
| 1 + 2 + 3 | 91.6 | 86.9 |
| All (1 + 2 + 3 + 4) | 95.6 | 94.2 |