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 2021-06 Association for Computational Linguistics Online text conference publication nlp4if-2021-nlp https://aclanthology.org/2021.nlp4if-1.0/ Identifying Automatically Generated Headlines using Transformers Antonis Maronikolakis author Hinrich Schütze author Mark Stevenson 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 maronikolakis-etal-2021-identifying 10.18653/v1/2021.nlp4if-1.1 https://aclanthology.org/2021.nlp4if-1.1/ 2021-06 1 6 Improving Hate Speech Type and Target Detection with Hateful Metaphor Features Jens Lemmens author Ilia Markov author Walter Daelemans 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 lemmens-etal-2021-improving 10.18653/v1/2021.nlp4if-1.2 https://aclanthology.org/2021.nlp4if-1.2/ 2021-06 7 16 Improving Cross-Domain Hate Speech Detection by Reducing the False Positive Rate Ilia Markov author Walter Daelemans 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 markov-daelemans-2021-improving 10.18653/v1/2021.nlp4if-1.3 https://aclanthology.org/2021.nlp4if-1.3/ 2021-06 17 22 Understanding the Impact of Evidence-Aware Sentence Selection for Fact Checking Giannis Bekoulis author Christina Papagiannopoulou author Nikos Deligiannis 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 bekoulis-etal-2021-understanding 10.18653/v1/2021.nlp4if-1.4 https://aclanthology.org/2021.nlp4if-1.4/ 2021-06 23 28 Leveraging Community and Author Context to Explain the Performance and Bias of Text-Based Deception Detection Models Galen Weld author Ellyn Ayton author Tim Althoff author Maria Glenski 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 weld-etal-2021-leveraging 10.18653/v1/2021.nlp4if-1.5 https://aclanthology.org/2021.nlp4if-1.5/ 2021-06 29 38 Never guess what I heard... Rumor Detection in Finnish News: a Dataset and a Baseline Mika Hämäläinen author Khalid Alnajjar author Niko Partanen author Jack Rueter 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 hamalainen-etal-2021-never 10.18653/v1/2021.nlp4if-1.6 https://aclanthology.org/2021.nlp4if-1.6/ 2021-06 39 44 Extractive and Abstractive Explanations for Fact-Checking and Evaluation of News Ashkan Kazemi author Zehua Li author Verónica Pérez-Rosas author Rada Mihalcea 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 kazemi-etal-2021-extractive 10.18653/v1/2021.nlp4if-1.7 https://aclanthology.org/2021.nlp4if-1.7/ 2021-06 45 50 Generalisability of Topic Models in Cross-corpora Abusive Language Detection Tulika Bose author Irina Illina author Dominique Fohr 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 bose-etal-2021-generalisability 10.18653/v1/2021.nlp4if-1.8 https://aclanthology.org/2021.nlp4if-1.8/ 2021-06 51 56 AraStance: A Multi-Country and Multi-Domain Dataset of Arabic Stance Detection for Fact Checking Tariq Alhindi author Amal Alabdulkarim author Ali Alshehri author Muhammad Abdul-Mageed author Preslav Nakov 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 alhindi-etal-2021-arastance 10.18653/v1/2021.nlp4if-1.9 https://aclanthology.org/2021.nlp4if-1.9/ 2021-06 57 65 MEAN: Multi-head Entity Aware Attention Networkfor Political Perspective Detection in News Media Chang Li author Dan Goldwasser 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 li-goldwasser-2021-mean 10.18653/v1/2021.nlp4if-1.10 https://aclanthology.org/2021.nlp4if-1.10/ 2021-06 66 75 An Empirical Assessment of the Qualitative Aspects of Misinformation in Health News Chaoyuan Zuo author Qi Zhang author Ritwik Banerjee 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 zuo-etal-2021-empirical 10.18653/v1/2021.nlp4if-1.11 https://aclanthology.org/2021.nlp4if-1.11/ 2021-06 76 81 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 DamascusTeam at NLP4IF2021: Fighting the Arabic COVID-19 Infodemic on Twitter Using AraBERT Ahmad Hussein author Nada Ghneim author Ammar Joukhadar 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 hussein-etal-2021-damascusteam 10.18653/v1/2021.nlp4if-1.13 https://aclanthology.org/2021.nlp4if-1.13/ 2021-06 93 98 NARNIA at NLP4IF-2021: Identification of Misinformation in COVID-19 Tweets Using BERTweet Ankit Kumar author Naman Jhunjhunwala author Raksha Agarwal author Niladri Chatterjee 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 kumar-etal-2021-narnia 10.18653/v1/2021.nlp4if-1.14 https://aclanthology.org/2021.nlp4if-1.14/ 2021-06 99 103 R00 at NLP4IF-2021 Fighting COVID-19 Infodemic with Transformers and More Transformers Ahmed Qarqaz author Dia Abujaber author Malak Abdullah 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 qarqaz-etal-2021-r00 10.18653/v1/2021.nlp4if-1.15 https://aclanthology.org/2021.nlp4if-1.15/ 2021-06 104 109 Multi Output Learning using Task Wise Attention for Predicting Binary Properties of Tweets : Shared-Task-On-Fighting the COVID-19 Infodemic Ayush Suhane author Shreyas Kowshik 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 suhane-kowshik-2021-multi 10.18653/v1/2021.nlp4if-1.16 https://aclanthology.org/2021.nlp4if-1.16/ 2021-06 110 114 iCompass at NLP4IF-2021–Fighting the COVID-19 Infodemic Wassim Henia author Oumayma Rjab author Hatem Haddad author Chayma Fourati 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 henia-etal-2021-icompass 10.18653/v1/2021.nlp4if-1.17 https://aclanthology.org/2021.nlp4if-1.17/ 2021-06 115 118 Fighting the COVID-19 Infodemic with a Holistic BERT Ensemble Georgios Tziafas author Konstantinos Kogkalidis author Tommaso Caselli 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 tziafas-etal-2021-fighting 10.18653/v1/2021.nlp4if-1.18 https://aclanthology.org/2021.nlp4if-1.18/ 2021-06 119 124 Detecting Multilingual COVID-19 Misinformation on Social Media via Contextualized Embeddings Subhadarshi Panda author Sarah Ita Levitan 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 panda-levitan-2021-detecting 10.18653/v1/2021.nlp4if-1.19 https://aclanthology.org/2021.nlp4if-1.19/ 2021-06 125 129 Transformers to Fight the COVID-19 Infodemic Lasitha Uyangodage author Tharindu Ranasinghe author Hansi Hettiarachchi 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 uyangodage-etal-2021-transformers 10.18653/v1/2021.nlp4if-1.20 https://aclanthology.org/2021.nlp4if-1.20/ 2021-06 130 135 Classification of Censored Tweets in Chinese Language using XLNet Shaikh Sahil Ahmed author Anand Kumar M. 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 ahmed-kumar-m-2021-classification 10.18653/v1/2021.nlp4if-1.21 https://aclanthology.org/2021.nlp4if-1.21/ 2021-06 136 139