SemEval-2021 Task 1: Lexical Complexity Prediction Matthew Shardlow author Richard Evans author Gustavo Henrique Paetzold author Marcos Zampieri author 2021-08 text Proceedings of the 15th International Workshop on Semantic Evaluation (SemEval-2021) Alexis Palmer editor Nathan Schneider editor Natalie Schluter editor Guy Emerson editor Aurelie Herbelot editor Xiaodan Zhu editor Association for Computational Linguistics Online conference publication shardlow-etal-2021-semeval 10.18653/v1/2021.semeval-1.1 https://aclanthology.org/2021.semeval-1.1/ 2021-08 1 16