Parallel Data Augmentation for Formality Style Transfer Yi Zhang author Tao Ge author Xu Sun author 2020-07 text Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics Dan Jurafsky editor Joyce Chai editor Natalie Schluter editor Joel Tetreault editor Association for Computational Linguistics Online conference publication zhang-etal-2020-parallel 10.18653/v1/2020.acl-main.294 https://aclanthology.org/2020.acl-main.294/ 2020-07 3221 3228