Unsupervised Paraphrasing by Simulated Annealing Xianggen Liu author Lili Mou author Fandong Meng author Hao Zhou author Jie Zhou author Sen Song 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 liu-etal-2020-unsupervised 10.18653/v1/2020.acl-main.28 https://aclanthology.org/2020.acl-main.28/ 2020-07 302 312