LENS: A Learnable Evaluation Metric for Text Simplification Mounica Maddela author Yao Dou author David Heineman author Wei Xu author 2023-07 text Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Anna Rogers editor Jordan Boyd-Graber editor Naoaki Okazaki editor Association for Computational Linguistics Toronto, Canada conference publication maddela-etal-2023-lens 10.18653/v1/2023.acl-long.905 https://aclanthology.org/2023.acl-long.905/ 2023-07 16383 16408