Features used in the verb agreement error correction system trained discriminatively. wB and wA denote the word immediately before and after the target, respectively; and pB and pA denote the POS tag before and after the target. Syntactic features are described in Table A.4. Adapted models also use the author's verb as a feature.
| Feature type . | Feature list . |
|---|---|
| Word | wB, w2B, w3B, wA, w2A, w3A, wBwA, w2BwB, wAw2A, w3Bw2BwB, w2BwBwA, wBwAw2A, wAw2Aw3A, w4Bw3Bw2BwB, w3Bw2BwBwA, w2BwBwAw2A, wBwAw2Aw3A, wAw2Aw3w4A |
| POS | pB, p2B, p3B, pA, p2A, p3A, pBpA, p2BpB, pAp2A, pBwB, pAwA, p2Bw2B, p2Aw2A, p2BpBpA, pBpAp2A, pAp2Ap3A |
| Syntax | subjHead, subjPOS, subjDet, subjDistance, subjNumber, subjPerson, subjHead&subjDistance, subjPOS&subjDistance, subjNumber&subjPerson |
| Feature type . | Feature list . |
|---|---|
| Word | wB, w2B, w3B, wA, w2A, w3A, wBwA, w2BwB, wAw2A, w3Bw2BwB, w2BwBwA, wBwAw2A, wAw2Aw3A, w4Bw3Bw2BwB, w3Bw2BwBwA, w2BwBwAw2A, wBwAw2Aw3A, wAw2Aw3w4A |
| POS | pB, p2B, p3B, pA, p2A, p3A, pBpA, p2BpB, pAp2A, pBwB, pAwA, p2Bw2B, p2Aw2A, p2BpBpA, pBpAp2A, pAp2Ap3A |
| Syntax | subjHead, subjPOS, subjDet, subjDistance, subjNumber, subjPerson, subjHead&subjDistance, subjPOS&subjDistance, subjNumber&subjPerson |