Fast, Cheap, and Creative: Evaluating Translation Quality Using Amazon’s Mechanical Turk Chris Callison-Burch author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication callison-burch-2009-fast https://aclanthology.org/D09-1030/ 2009-08 286 295