Paper: IITB System for CoNLL 2013 Shared Task: A Hybrid Approach to Grammatical Error Correction

ACL ID W13-3611
Title IITB System for CoNLL 2013 Shared Task: A Hybrid Approach to Grammatical Error Correction
Venue International Conference on Computational Natural Language Learning
Session shared task
Year 2013
Authors

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).