SINAI at SemEval-2021 Task 5: Combining Embeddings in a BiLSTM-CRF model for Toxic Spans Detection Flor Miriam Plaza-del-Arco author Pilar López-Úbeda author L Alfonso Ureña-López author M Teresa Martín-Valdivia 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 plaza-del-arco-etal-2021-sinai 10.18653/v1/2021.semeval-1.134 https://aclanthology.org/2021.semeval-1.134/ 2021-08 984 989