CASE 2021 Task 2 Socio-political Fine-grained Event Classification using Fine-tuned RoBERTa Document Embeddings Samantha Kent author Theresa Krumbiegel author 2021-08 text Proceedings of the 4th Workshop on Challenges and Applications of Automated Extraction of Socio-political Events from Text (CASE 2021) Ali Hürriyetoğlu editor Association for Computational Linguistics Online conference publication kent-krumbiegel-2021-case 10.18653/v1/2021.case-1.26 https://aclanthology.org/2021.case-1.26/ 2021-08 208 217