Understanding and Detecting Hallucinations in Neural Machine Translation via Model Introspection Weijia Xu author Sweta Agrawal author Eleftheria Briakou author Marianna J Martindale author Marine Carpuat author 2023 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal xu-etal-2023-understanding 10.1162/tacl_a_00563 https://aclanthology.org/2023.tacl-1.32/ 2023 11 546 564