English test set results (WSJ Section 23) applying sentence-level high precision and unary constraints to three parsers with parameter settings tuned on development data.
| Parser . | F1 . | Precision . | Recall . | Seconds . | Speed-up . |
|---|---|---|---|---|---|
| BUBS (2010) | 88.4 | 88.5 | 88.3 | 586 | |
| + Unary(100) | 88.5 | 88.7 | 88.3 | 486 | 1.2x |
| + HP(0.9) | 88.7 | 88.9 | 88.6 | 349 | 1.7x |
| + HP(0.9) + Unary(100) | 88.7 | 89.0 | 88.4 | 283 | 2.1x |
| Charniak (2000) | 89.7 | 89.7 | 89.6 | 1,116 | |
| + Unary(100) | 89.8 | 89.8 | 89.7 | 900 | 1.2x |
| + HP(0.8) | 89.8 | 90.0 | 89.6 | 716 | 1.6x |
| + HP(0.8) + Unary(100) | 89.7 | 90.0 | 89.5 | 679 | 1.6x |
| Berkeley (2007) | 90.2 | 90.3 | 90.0 | 564 | |
| + Unary(125) | 90.1 | 90.3 | 89.9 | 495 | 1.1x |
| + HP(0.7) | 90.2 | 90.4 | 90.0 | 320 | 1.8x |
| + HP(0.7) + Unary(125) | 90.2 | 90.4 | 89.9 | 289 | 2.0x |
| Parser . | F1 . | Precision . | Recall . | Seconds . | Speed-up . |
|---|---|---|---|---|---|
| BUBS (2010) | 88.4 | 88.5 | 88.3 | 586 | |
| + Unary(100) | 88.5 | 88.7 | 88.3 | 486 | 1.2x |
| + HP(0.9) | 88.7 | 88.9 | 88.6 | 349 | 1.7x |
| + HP(0.9) + Unary(100) | 88.7 | 89.0 | 88.4 | 283 | 2.1x |
| Charniak (2000) | 89.7 | 89.7 | 89.6 | 1,116 | |
| + Unary(100) | 89.8 | 89.8 | 89.7 | 900 | 1.2x |
| + HP(0.8) | 89.8 | 90.0 | 89.6 | 716 | 1.6x |
| + HP(0.8) + Unary(100) | 89.7 | 90.0 | 89.5 | 679 | 1.6x |
| Berkeley (2007) | 90.2 | 90.3 | 90.0 | 564 | |
| + Unary(125) | 90.1 | 90.3 | 89.9 | 495 | 1.1x |
| + HP(0.7) | 90.2 | 90.4 | 90.0 | 320 | 1.8x |
| + HP(0.7) + Unary(125) | 90.2 | 90.4 | 89.9 | 289 | 2.0x |