On the Helpfulness of Document Context to Sentence Simplification Renliang Sun author Zhe Lin author Xiaojun Wan author 2020-12 text Proceedings of the 28th International Conference on Computational Linguistics Donia Scott editor Nuria Bel editor Chengqing Zong editor International Committee on Computational Linguistics Barcelona, Spain (Online) conference publication sun-etal-2020-helpfulness 10.18653/v1/2020.coling-main.121 https://aclanthology.org/2020.coling-main.121/ 2020-12 1411 1423