... 2 Tense/Aspect Error CorpusDeveloping a high-quality tense and aspect error correction system requires a large corpus annotatedwith tense/aspect errors. However, existing anno-tated ... having corrections.5The annotatedtense/aspect labels include 12 combinations of tense(past, present, future) and aspect (nothing, perfect,progressive, perfect progressive).3 Error Correction ... Precision-Recall curve for error correction 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 SVM MAXENT CRF data includes 16,308 verb phrases, of which 1,072(6.6%) contain tense/aspect errors. We used...