DUB: Discrete Unit Back-translation for Speech Translation Dong Zhang author Rong Ye author Tom Ko author Mingxuan Wang author Yaqian Zhou author 2023-07 text Findings of the Association for Computational Linguistics: ACL 2023 Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication zhang-etal-2023-dub 10.18653/v1/2023.findings-acl.447 https://aclanthology.org/2023.findings-acl.447/ 2023-07 7147 7164