IITB System for CoNLL 2013 Shared Task: A Hybrid Approach to Grammatical Error Correction
Anoop Kunchukuttan, Ritesh Shah, Pushpak Bhattacharyya · 2013
We describe our grammar correction sys-tem for the CoNLL-2013 shared task. Our system corrects three of the five er-ror types specified for the shared task-noun-number, determiner and subject-verb agreement errors. For noun-number and determiner correction, we apply a classi-fication approach using rich lexical and syntactic features. For subject-verb agree-ment correction, we propose a new rule-based system which utilizes dependency parse information and a set of conditional rules to ensure agreement of the verb group with its subject. Our system ob-tained an F-score of 11.03 on the official test set using the M2 evaluation method (the official evaluation method). 1