1 code implementation • RANLP 2021 • Preslav Nakov, Firoj Alam, Shaden Shaar, Giovanni Da San Martino, Yifan Zhang
With the emergence of the COVID-19 pandemic, the political and the medical aspects of disinformation merged as the problem got elevated to a whole new level to become the first global infodemic.
no code implementations • Empirical Methods in Natural Language Processing (EMNLP) 2024 • Arkadiusz Modzelewski, Giovanni Da San Martino, Pavel Savov, Magdalena Anna Wilczyńska, Adam Wierzbicki
This study presents a novel corpus of 15, 356 Polish web articles, including articles identified as containing disinformation.
no code implementations • 6 Nov 2023 • Maram Hasanain, Firoj Alam, Hamdy Mubarak, Samir Abdaljalil, Wajdi Zaghouani, Preslav Nakov, Giovanni Da San Martino, Abed Alhakim Freihat
We present an overview of the ArAIEval shared task, organized as part of the first ArabicNLP 2023 conference co-located with EMNLP 2023.
no code implementations • 17 Jan 2023 • Serena Tardelli, Leonardo Nizzoli, Maurizio Tesconi, Mauro Conti, Preslav Nakov, Giovanni Da San Martino, Stefano Cresci
Large-scale online campaigns, malicious or otherwise, require a significant degree of coordination among participants, which sparked interest in the study of coordinated online behavior.
no code implementations • 18 Nov 2022 • Firoj Alam, Hamdy Mubarak, Wajdi Zaghouani, Giovanni Da San Martino, Preslav Nakov
Thus, there has been a lot of recent research on automatic detection of propaganda techniques in text as well as in memes.
1 code implementation • 9 May 2022 • Shivam Sharma, Firoj Alam, Md. Shad Akhtar, Dimitar Dimitrov, Giovanni Da San Martino, Hamed Firooz, Alon Halevy, Fabrizio Silvestri, Preslav Nakov, Tanmoy Chakraborty
One interesting finding is that many types of harmful memes are not really studied, e. g., such featuring self-harm and extremism, partly due to the lack of suitable datasets.
no code implementations • 27 Sep 2021 • Kristina Hristakieva, Stefano Cresci, Giovanni Da San Martino, Mauro Conti, Preslav Nakov
Large-scale manipulations on social media have two important characteristics: (i) use of propaganda to influence others, and (ii) adoption of coordinated behavior to spread it and to amplify its impact.
no code implementations • 25 Sep 2021 • Tamer Elsayed, Preslav Nakov, Alberto Barrón-Cedeño, Maram Hasanain, Reem Suwaileh, Giovanni Da San Martino, Pepa Atanasova
We present an overview of the second edition of the CheckThat!
no code implementations • 23 Sep 2021 • Preslav Nakov, Giovanni Da San Martino, Tamer Elsayed, Alberto Barrón-Cedeño, Rubén Míguez, Shaden Shaar, Firoj Alam, Fatima Haouari, Maram Hasanain, Watheq Mansour, Bayan Hamdan, Zien Sheikh Ali, Nikolay Babulkov, Alex Nikolov, Gautam Kishore Shahi, Julia Maria Struß, Thomas Mandl, Mucahid Kutlu, Yavuz Selim Kartal
We describe the fourth edition of the CheckThat!
no code implementations • NAACL (NLP4IF) 2021 • Shaden Shaar, Firoj Alam, Giovanni Da San Martino, Alex Nikolov, Wajdi Zaghouani, Preslav Nakov, Anna Feldman
Here, we present the tasks, analyze the results, and discuss the system submissions and the methods they used.
no code implementations • RANLP 2021 • Preslav Nakov, Firoj Alam, Shaden Shaar, Giovanni Da San Martino, Yifan Zhang
While COVID-19 vaccines are finally becoming widely available, a second pandemic that revolves around the circulation of anti-vaxxer fake news may hinder efforts to recover from the first one.
1 code implementation • 14 Sep 2021 • Shaden Shaar, Nikola Georgiev, Firoj Alam, Giovanni Da San Martino, Aisha Mohamed, Preslav Nakov
The output is a re-ranked list of the document sentences, so that those that can be verified are ranked as high as possible, together with corresponding evidence.
no code implementations • RANLP 2021 • Seunghak Yu, Giovanni Da San Martino, Mitra Mohtarami, James Glass, Preslav Nakov
Online users today are exposed to misleading and propagandistic news articles and media posts on a daily basis.
1 code implementation • ACL 2021 • Dimitar Dimitrov, Bishr Bin Ali, Shaden Shaar, Firoj Alam, Fabrizio Silvestri, Hamed Firooz, Preslav Nakov, Giovanni Da San Martino
We further create and release a new corpus of 950 memes, carefully annotated with 22 propaganda techniques, which can appear in the text, in the image, or in both.
1 code implementation • SEMEVAL 2021 • Dimitar Dimitrov, Bishr Bin Ali, Shaden Shaar, Firoj Alam, Fabrizio Silvestri, Hamed Firooz, Preslav Nakov, Giovanni Da San Martino
We describe SemEval-2021 task 6 on Detection of Persuasion Techniques in Texts and Images: the data, the annotation guidelines, the evaluation setup, the results, and the participating systems.
1 code implementation • Findings (NAACL) 2022 • Shaden Shaar, Firoj Alam, Giovanni Da San Martino, Preslav Nakov
Recent years have seen the proliferation of disinformation and fake news online.
no code implementations • COLING 2022 • Firoj Alam, Stefano Cresci, Tanmoy Chakraborty, Fabrizio Silvestri, Dimiter Dimitrov, Giovanni Da San Martino, Shaden Shaar, Hamed Firooz, Preslav Nakov
As a result, researchers started leveraging different modalities and combinations thereof to tackle online multimodal offensive content.
no code implementations • 13 Mar 2021 • Preslav Nakov, David Corney, Maram Hasanain, Firoj Alam, Tamer Elsayed, Alberto Barrón-Cedeño, Paolo Papotti, Shaden Shaar, Giovanni Da San Martino
The reporting and the analysis of current events around the globe has expanded from professional, editor-lead journalism all the way to citizen journalism.
no code implementations • SEMEVAL 2020 • Giovanni Da San Martino, Alberto Barr{\'o}n-Cede{\~n}o, Henning Wachsmuth, Rostislav Petrov, Preslav Nakov
We present the results and the main findings of SemEval-2020 Task 11 on Detection of Propaganda Techniques in News Articles.
no code implementations • EMNLP 2020 • Preslav Nakov, Giovanni Da San Martino
The rise of social media has democratized content creation and has made it easy for everybody to share and spread information online.
1 code implementation • EMNLP 2020 • Ramy Baly, Giovanni Da San Martino, James Glass, Preslav Nakov
We explore the task of predicting the leading political ideology or bias of news articles.
3 code implementations • 7 Sep 2020 • Alex Nikolov, Giovanni Da San Martino, Ivan Koychev, Preslav Nakov
While misinformation and disinformation have been thriving in social media for years, with the emergence of the COVID-19 pandemic, the political and the health misinformation merged, thus elevating the problem to a whole new level and giving rise to the first global infodemic.
3 code implementations • 15 Jul 2020 • Alberto Barron-Cedeno, Tamer Elsayed, Preslav Nakov, Giovanni Da San Martino, Maram Hasanain, Reem Suwaileh, Fatima Haouari, Nikolay Babulkov, Bayan Hamdan, Alex Nikolov, Shaden Shaar, Zien Sheikh Ali
The first four tasks compose the full pipeline of claim verification in social media: Task 1 on check-worthiness estimation, Task 2 on retrieving previously fact-checked claims, Task 3 on evidence retrieval, and Task 4 on claim verification.
1 code implementation • 15 Jul 2020 • Firoj Alam, Fahim Dalvi, Shaden Shaar, Nadir Durrani, Hamdy Mubarak, Alex Nikolov, Giovanni Da San Martino, Ahmed Abdelali, Hassan Sajjad, Kareem Darwish, Preslav Nakov
With the outbreak of the COVID-19 pandemic, people turned to social media to read and to share timely information including statistics, warnings, advice, and inspirational stories.
no code implementations • 15 Jul 2020 • Giovanni Da San Martino, Stefano Cresci, Alberto Barron-Cedeno, Seunghak Yu, Roberto Di Pietro, Preslav Nakov
Propaganda campaigns aim at influencing people's mindset with the purpose of advancing a specific agenda.
no code implementations • ACL 2020 • Giovanni Da San Martino, Shaden Shaar, Yifan Zhang, Seunghak Yu, Alberto Barrón-Cedeño, Preslav Nakov
However, little attention has been paid to the specific rhetorical and psychological techniques used to convey propaganda messages.
2 code implementations • ACL 2020 • Shaden Shaar, Giovanni Da San Martino, Nikolay Babulkov, Preslav Nakov
Interestingly, despite the importance of the task, it has been largely ignored by the research community so far.
2 code implementations • Findings (EMNLP) 2021 • Firoj Alam, Shaden Shaar, Fahim Dalvi, Hassan Sajjad, Alex Nikolov, Hamdy Mubarak, Giovanni Da San Martino, Ahmed Abdelali, Nadir Durrani, Kareem Darwish, Abdulaziz Al-Homaid, Wajdi Zaghouani, Tommaso Caselli, Gijs Danoe, Friso Stolk, Britt Bruntink, Preslav Nakov
With the emergence of the COVID-19 pandemic, the political and the medical aspects of disinformation merged as the problem got elevated to a whole new level to become the first global infodemic.
3 code implementations • 21 Jan 2020 • Alberto Barron-Cedeno, Tamer Elsayed, Preslav Nakov, Giovanni Da San Martino, Maram Hasanain, Reem Suwaileh, Fatima Haouari
Finally, the lab offers a fifth task that asks to predict the check-worthiness of the claims made in English political debates and speeches.
no code implementations • 14 Dec 2019 • Alberto Barrón-Cedeño, Giovanni Da San Martino, Israa Jaradat, Preslav Nakov
We present proppy, the first publicly available real-world, real-time propaganda detection system for online news, which aims at raising awareness, thus potentially limiting the impact of propaganda and helping fight disinformation.
no code implementations • EMNLP 2015 • Shafiq Joty, Alberto Barrón-Cedeño, Giovanni Da San Martino, Simone Filice, Lluís Màrquez, Alessandro Moschitti, Preslav Nakov
Community question answering, a recent evolution of question answering in the Web context, allows a user to quickly consult the opinion of a number of people on a particular topic, thus taking advantage of the wisdom of the crowd.
no code implementations • 15 Nov 2019 • Seunghak Yu, Giovanni Da San Martino, Preslav Nakov
Many recent political events, like the 2016 US Presidential elections or the 2018 Brazilian elections have raised the attention of institutions and of the general public on the role of Internet and social media in influencing the outcome of these events.
no code implementations • IJCNLP 2019 • Giovanni Da San Martino, Seunghak Yu, Alberto Barr{\'o}n-Cede{\~n}o, Rostislav Petrov, Preslav Nakov
Propaganda aims at influencing people{'}s mindset with the purpose of advancing a specific agenda.
no code implementations • WS 2019 • Giovanni Da San Martino, Alberto Barrón-Cedeño, Preslav Nakov
FLC is a fragment-level task that asks for the identification of propagandist text fragments in a news article and also for the prediction of the specific propaganda technique used in each such fragment (18-way classification task).
no code implementations • 6 Oct 2019 • Giovanni Da San Martino, Seunghak Yu, Alberto Barrón-Cedeño, Rostislav Petrov, Preslav Nakov
Propaganda aims at influencing people's mindset with the purpose of advancing a specific agenda.
no code implementations • IJCNLP 2019 • Yifan Zhang, Giovanni Da San Martino, Alberto Barrón-Cedeño, Salvatore Romeo, Jisun An, Haewoon Kwak, Todor Staykovski, Israa Jaradat, Georgi Karadzhov, Ramy Baly, Kareem Darwish, James Glass, Preslav Nakov
We introduce Tanbih, a news aggregator with intelligent analysis tools to help readers understanding what's behind a news story.
no code implementations • SEMEVAL 2019 • Daniel Shaprin, Giovanni Da San Martino, Alberto Barr{\'o}n-Cede{\~n}o, Preslav Nakov
We describe the system submitted by the Jack Ryder team to SemEval-2019 Task 4 on Hyperpartisan News Detection.
no code implementations • SEMEVAL 2019 • Abdelrhman Saleh, Ramy Baly, Alberto Barrón-Cedeño, Giovanni Da San Martino, Mitra Mohtarami, Preslav Nakov, James Glass
In this paper, we describe our submission to SemEval-2019 Task 4 on Hyperpartisan News Detection.
no code implementations • ACL 2018 • Salvatore Romeo, Giovanni Da San Martino, Alberto Barr{\'o}n-Cede{\~n}o, Aless Moschitti, ro
Although deep neural networks have been proving to be excellent tools to deliver state-of-the-art results, when data is scarce and the tackled tasks involve complex semantic inference, deep linguistic processing and traditional structure-based approaches, such as tree kernel methods, are an alternative solution.
no code implementations • 4 Oct 2017 • Giovanni Da San Martino, Salvatore Romeo, Alberto Barron-Cedeno, Shafiq Joty, Lluis Marquez, Alessandro Moschitti, Preslav Nakov
We compare a kernel-based system with a feed-forward neural network in a scenario where a large parallel corpus is available for training a machine translation system, bilingual dictionaries, and cross-language word embeddings.
no code implementations • RANLP 2017 • Martin Boyanov, Ivan Koychev, Preslav Nakov, Alessandro Moschitti, Giovanni Da San Martino
Finally, we propose to use extrinsic evaluation with respect to a QA task as an automatic evaluation method for chatbots.
no code implementations • EMNLP 2017 • Henning Wachsmuth, Giovanni Da San Martino, Dora Kiesel, Benno Stein
Several approaches have been proposed to model either the explicit sequential structure of an argumentative text or its implicit hierarchical structure.
no code implementations • SEMEVAL 2017 • Simone Filice, Giovanni Da San Martino, Aless Moschitti, ro
This paper describes the KeLP system participating in the SemEval-2017 community Question Answering (cQA) task.
no code implementations • COLING 2016 • Enamul Hoque, Shafiq Joty, Llu{\'\i}s M{\`a}rquez, Alberto Barr{\'o}n-Cede{\~n}o, Giovanni Da San Martino, Aless Moschitti, ro, Preslav Nakov, Salvatore Romeo, Giuseppe Carenini
We present an interactive system to provide effective and efficient search capabilities in Community Question Answering (cQA) forums.
no code implementations • COLING 2016 • Alberto Barr{\'o}n-Cede{\~n}o, Giovanni Da San Martino, Salvatore Romeo, Aless Moschitti, ro
Community question answering (cQA) websites are focused on users who query questions onto an online forum, expecting for other users to provide them answers or suggestions.
no code implementations • COLING 2016 • Salvatore Romeo, Giovanni Da San Martino, Alberto Barr{\'o}n-Cede{\~n}o, Aless Moschitti, ro, Yonatan Belinkov, Wei-Ning Hsu, Yu Zhang, Mitra Mohtarami, James Glass
In real-world data, e. g., from Web forums, text is often contaminated with redundant or irrelevant content, which leads to introducing noise in machine learning algorithms.
no code implementations • 18 Oct 2016 • Giovanni Da San Martino, Alberto Barrón-Cedeño, Salvatore Romeo, Alessandro Moschitti, Shafiq Joty, Fahad A. Al Obaidli, Kateryna Tymoshenko, Antonio Uva
In the case of the Arabic question re-ranking task, for the first time we applied tree kernels on syntactic trees of Arabic sentences.
no code implementations • SEMEVAL 2016 • Alberto Barr{\'o}n-Cede{\~n}o, Daniele Bonadiman, Giovanni Da San Martino, Shafiq Joty, Aless Moschitti, ro, Fahad Al Obaidli, Salvatore Romeo, Kateryna Tymoshenko, Antonio Uva
Ranked #2 on Question Answering on SemEvalCQA
no code implementations • 22 Sep 2015 • Giovanni Da San Martino, Nicolò Navarin, Alessandro Sperduti
In this paper we present a novel graph kernel framework inspired the by the Weisfeiler-Lehman (WL) isomorphism tests.
no code implementations • 3 Sep 2015 • Giovanni Da San Martino, Nicolò Navarin, Alessandro Sperduti
While existing kernel methods are effective techniques for dealing with graphs having discrete node labels, their adaptation to non-discrete or continuous node attributes has been limited, mainly for computational issues.
no code implementations • 13 Jul 2015 • Giovanni Da San Martino, Nicolò Navarin, Alessandro Sperduti
In this paper, we show how the Ordered Decomposition DAGs (ODD) kernel framework, a framework that allows the definition of graph kernels from tree kernels, allows to easily define new state-of-the-art graph kernels.
no code implementations • 8 Jul 2015 • Giovanni Da San Martino, Nicolò Navarin, Alessandro Sperduti
It turns out that, when strict memory budget constraints have to be enforced, working in feature space, given the current state of the art on graph kernels, is more than a viable alternative to dual approaches, both in terms of speed and classification performance.
no code implementations • SEMEVAL 2015 • Massimo Nicosia, Simone Filice, Alberto Barr{\'o}n-Cede{\~n}o, Iman Saleh, Hamdy Mubarak, Wei Gao, Preslav Nakov, Giovanni Da San Martino, Aless Moschitti, ro, Kareem Darwish, Llu{\'\i}s M{\`a}rquez, Shafiq Joty, Walid Magdy