HITMI&T at SemEval-2021 Task 5: Integrating Transformer and CRF for Toxic Spans Detection Chenyi Wang author Tianshu Liu author Tiejun Zhao 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 wang-etal-2021-hitmi 10.18653/v1/2021.semeval-1.117 https://aclanthology.org/2021.semeval-1.117/ 2021-08 870 874