A Risk Communication Event Detection Model via Contrastive Learning Mingi Shin author Sungwon Han author Sungkyu Park author Meeyoung Cha author 2020-12 text Proceedings of the 3rd NLP4IF Workshop on NLP for Internet Freedom: Censorship, Disinformation, and Propaganda Giovanni Da San Martino editor Chris Brew editor Giovanni Luca Ciampaglia editor Anna Feldman editor Chris Leberknight editor Preslav Nakov editor International Committee on Computational Linguistics (ICCL) Barcelona, Spain (Online) conference publication shin-etal-2020-risk https://aclanthology.org/2020.nlp4if-1.5/ 2020-12 39 43