The (Un)Suitability of Automatic Evaluation Metrics for Text Simplification Fernando Alva-Manchego author Carolina Scarton author Lucia Specia author 2021-12 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal alva-manchego-etal-2021-un 10.1162/coli_a_00418 https://aclanthology.org/2021.cl-4.28/ 2021-12 47 4 861 889