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F-scores using Structural Information.
| Feature | 6-way | 5-way | ||
|---|---|---|---|---|
| S | U | S | U | |
| 1.P+Pst | 73.26 | 64.01 | 83.64 | 70.88 |
| 1.P+Sec | 79.22 | – | 88.88 | – |
| 1.P+SecM | 76.95 | – | 87.48 | – |
| 1.P+Pst+Sec | 79.67 | – | 89.19 | – |
| 1.P+Pst+SecM | 78.45 | – | 88.55 | – |
1.P: Unigrams with POS, Pst: Position, Sec: Section heading, SecM: Section heading with mapping. Best results per column are given in bold.
