SEMA: Text Simplification Evaluation through Semantic Alignment Xuan Zhang author Huizhou Zhao author KeXin Zhang author Yiyang Zhang author 2020-12 text Proceedings of the 6th Workshop on Natural Language Processing Techniques for Educational Applications Erhong YANG editor Endong XUN editor Baolin ZHANG editor Gaoqi RAO editor Association for Computational Linguistics Suzhou, China conference publication zhang-etal-2020-sema 10.18653/v1/2020.nlptea-1.17 https://aclanthology.org/2020.nlptea-1.17/ 2020-12 121 128