Creating a manually error-tagged and shallow-parsed learner corpus Ryo Nagata author Edward Whittaker author Vera Sheinman author 2011-06 text Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies Dekang Lin editor Yuji Matsumoto editor Rada Mihalcea editor Association for Computational Linguistics Portland, Oregon, USA conference publication nagata-etal-2011-creating https://aclanthology.org/P11-1121/ 2011-06 1210 1219