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F-scores using 1 to 3 previous sentences (Indirect).
| Feature | 6-way | 5-way | ||
|---|---|---|---|---|
| S | U | S | U | |
| B+1 Prev. Sen. | 79.09 | 65.06 | 88.33 | 71.80 |
| B+2 Prev. Sen. | 77.53 | 66.30 | 88.33 | 73.64 |
| B+3 Prev. Sen. | 76.75 | 66.94 | 88.03 | 74.03 |
| B+Window | 77.48 | 61.98 | 87.50 | 69.90 |
B: base features, Window: features in previous and posterior sentence. Best performance per column is given in bold.
