LZ1904 at SemEval-2021 Task 5: Bi-LSTM-CRF for Toxic Span Detection using Pretrained Word Embedding Liang Zou author Wen Li 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 zou-li-2021-lz1904 10.18653/v1/2021.semeval-1.138 https://aclanthology.org/2021.semeval-1.138/ 2021-08 1009 1014