CODACT: Towards Identifying Orthographic Variants in Dialectal Arabic Pradeep Dasigi author Mona Diab author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication dasigi-diab-2011-codact https://aclanthology.org/I11-1036/ 2011-11 318 326