Findings of the NLP4IF-2021 Shared Tasks on Fighting the COVID-19 Infodemic and Censorship Detection Shaden Shaar author Firoj Alam author Giovanni Da San Martino author Alex Nikolov author Wajdi Zaghouani author Preslav Nakov author Anna Feldman author 2021-06 text Proceedings of the Fourth Workshop on NLP for Internet Freedom: Censorship, Disinformation, and Propaganda Anna Feldman editor Giovanni Da San Martino editor Chris Leberknight editor Preslav Nakov editor Association for Computational Linguistics Online conference publication shaar-etal-2021-findings 10.18653/v1/2021.nlp4if-1.12 https://aclanthology.org/2021.nlp4if-1.12/ 2021-06 82 92