Table 10.
F-scores over dataset from [18].
| Feature | 5-way | 4-way | ||
|---|---|---|---|---|
| S | U | S | U | |
| Lexical & Structural | ||||
| 1.P | 55.12 | 37.10 | 76.90 | 76.32 |
| 1.P+Pst | 57.80 | 38.53 | 78.04 | 72.82 |
| 1.P+Pst+Sec | 62.83 | – | 83.81 | – |
| Sequential (indirect) | ||||
| 1.P+Pst+W | 56.06 | 38.76 | 75.26 | 72.82 |
| 1.P+Pst+Sec+W | 61.57 | – | 81.85 | – |
| B+1 Prev. Sen. | 62.36 | 41.38 | 83.84 | 75.20 |
| B+2 Prev. Sen. | 61.26 | 37.81 | 82.26 | 72.78 |
| B+3 Prev. Sen. | 60.16 | 37.81 | 82.20 | 75.27 |
| Sequential (direct) | ||||
| B+1 Prev. Label | 63.15 | 37.57 | 81.93 | 79.21 |
| B+3 Prev. Label | 63.15 | 36.39 | 77.72 | 76.98 |
| B+All Prev. Labels | 62.05 | 37.10 | 82.67 | 78.26 |
1.P: unigrams with POS, Pst: position, W: windowed features, Sec: section headings, B: base features. Best results per column are given in bold.