Pedro Ramaciotti

Publications

Pré-publication, Document de travail (16)

Mapping the political landscape from data traces: multidimensional opinions of users, politicians and media outlets on X Antoine Vendeville,Jimena Royo-Letelier,Duncan Cassells,Jean-Philippe Cointet,Maxime Crépelet al. 2026 Pré-publication, Document de travail hal-05222448v2
Approximating Ideology Scaling of Online Social Networks with Factor Analysis Identifying Dimensions with Survey Reference Frames Pedro Ramaciotti Morales,Benjamin Gilbert,Zografoula Vagena 2026 Pré-publication, Document de travail hal-05497770v1
Recommender system in X inadvertently profiles ideological positions of users Paul Bouchaud,Pedro Ramaciotti Morales 2026 Pré-publication, Document de travail hal-05468493v1
Expressing Political Identity Online: Differential issue-based self-identification across the Left–Right spectrum Carlo Romano Marcello Alessandro Santagiustina,Jean-Philippe Cointet,Pedro Ramaciotti Morales 2026 Pré-publication, Document de travail (preprint/prepublication) hal-04874311v3
Efficient computational methods for the estimation of ideal points in social sciences Ioannis Chalkiadakis,Gareth W Peters,Pedro Ramaciotti Morales 2026 Pré-publication, Document de travail hal-05498685v1
Political attitudes differ but share a common low-dimensional structure across social media and survey data Antoine Vendeville,Hiroki Yamashita,Pedro Ramaciotti 2026 Pré-publication, Document de travail hal-05533717v1
Community Notes undermoderate polarizing content by design creating risks in electoral processes Paul Bouchaud,Pedro Ramaciotti 2026 Pré-publication, Document de travail hal-05116614v2
Web Crawler Restrictions, AI Training Datasets & Political Biases Paul Bouchaud,Pedro Ramaciotti 2025 Pré-publication, Document de travail hal-05302425v1
Co-evolution of groups and opinions in agent-based models Duncan Cassells,Antoine Vendeville,Lionel Tabourier,Pedro Ramaciotti 2025 Pré-publication, Document de travail hal-05146797v1
How do Recommender Systems Learn Political Opinions? A Semi-Synthetic Step-by-Step Experiment Tim Faverjon,Jean-Philippe Cointet,Pedro Ramaciotti 2025 Pré-publication, Document de travail hal-05188170v2
Linear socio-demographic representations emerge in Large Language Models from indirect cues Paul Bouchaud,Pedro Ramaciotti 2025 Pré-publication, Document de travail hal-05410269v1
Representation, Political Discontent and e-Petitions: How economic ideology and anti-elitism drive online petitioning in the EU Carlo Romano Marcello Alessandro Santagiustina,Pedro Ramaciotti Morales 2025 Pré-publication, Document de travail (preprint/prepublication) hal-05389645v2
Tracking Inauthentic Amplification on Social Media: A Scalable Method to Detect Duplicated Messages Manon Richard,Agnès Mustar,Lisa Giordani,Cristián Brokate,Paul Bouchaudet al. 2025 Pré-publication, Document de travail hal-05301215v2
Inferring Attitudinal Spaces in Social Networks Pedro Ramaciotti Morales,Jean-Philippe Cointet,Gabriel Muñoz Zolotoochin,Antonio Fernández Peralta,Gerardo Iñiguezet al. 2022 Pré-publication, Document de travail hal-03573188v1
The geometry of misinformation: embedding Twitter networks of users who spread fake news in geometrical opinion spaces Pedro Ramaciotti Morales,Manon Berriche,Jean-Philippe Cointet 2022 Pré-publication, Document de travail hal-03725556v2
Le cadran de la visibilité de la sphere médiatique et politique sur YouTube Bilel Benbouzid,Emma Gauthier,Pedro Ramaciotti,Bertrand Roudier,Tommaso Venturini 2020 Pré-publication, Document de travail hal-03046284v1

Article dans une revue (13)

Seeing in the dark: Towards a broad construction of the access to data provisions of the DSA Beatriz Botero Arcila,Pedro Ramaciotti,Emma Cabale Internet Policy Review, 2026, 15 (1), ⟨10.14763/2026.1.2085⟩ Article dans une revue hal-05522872v1
Mapping the e-petition ecosystem through Social Media: mobilization in the EU across issues and ideologies Carlo Romano Marcello Alessandro Santagiustina,Pedro Ramaciotti Morales Journal of Quantitative Description: Digital Media, 2026, 6, pp.1-34. ⟨10.51685/jqd.2026.001⟩ Article dans une revue hal-05264876v2
Co-evolution of groups and opinions in an agent-based model Duncan Cassells,Antoine Vendeville,Lionel Tabourier,Pedro Ramaciotti PLoS ONE, 2025, 20 (12), pp.e0338486. ⟨10.1371/journal.pone.0338486⟩ Article dans une revue hal-05417944v1
Flooding the Feed: The Politics of Social Media Sharing Among Defensive Publics Katharina Tittel,William Allen,Pedro Ramaciotti Political Communication, 2025, pp.1-32. ⟨10.1080/10584609.2025.2588248⟩ Article dans une revue hal-05373547v1
Nos traces numériques au service de la régulation des plateformes Pedro Ramaciotti Morales,Jean-Pilippe Cointet,Tim Faverjon Comprendre son temps, 2024, 2, pp.58-65 Article dans une revue hal-04837623v1
American Politics in 3D: Measuring multidimensional issue alignment in social media using social graphs and text data Pedro Ramaciotti,Duncan Cassells,Zografoula Vagena,Jean-Philippe Cointet,Michael Bailey Applied Network Science, 2024, ⟨10.1007/s41109-023-00608-w⟩ Article dans une revue hal-04363008v1
Auditing the audits: evaluating methodologies for social media recommender system audits Paul Bouchaud,Pedro Ramaciotti Morales Applied Network Science, 2024, ⟨10.1007/s41109-024-00668-6⟩ Article dans une revue hal-04699600v1
Tweeting apart: Democratic backsliding, new party cleavage and changing media ownership in Turkey Omer Faruk Metin,Pedro Ramaciotti Morales Party Politics, 2022, ⟨10.1177/13540688221135019⟩ Article dans une revue hal-03668042v3
Posters and protesters Pedro Ramaciotti Morales,Jean-Philippe Cointet,Caterina Froio Journal of Computational Social Science, In press, ⟨10.1007/s42001-022-00163-x⟩ Article dans une revue hal-03606955v1
Measuring diversity in heterogeneous information networks Pedro Ramaciotti Morales,Robin Lamarche-Perrin,Raphaël Fournier-S'Niehotta,Rémy Poulain,Lionel Tabourieret al. Theoretical Computer Science, 2021, 859, pp.80-115. ⟨10.1016/j.tcs.2021.01.013⟩ Article dans une revue hal-03608575v1
What colours are the yellow vests? An ideological scaling of Facebook groups Jean-Philippe Cointet,Pedro Ramaciotti Morales,Dominique Cardon,Caterina Froio,Andrei Mogoutovet al. Statistique et Société, 2021, Statistique et Société, 9 (1-2), pp.79-107 Article dans une revue halshs-03299366v1
De quelle(s) couleur(s) sont les Gilets jaunes ? Plonger des posts Facebook dans un espace idéologique latent Jean-Philippe Cointet,Pedro Ramaciotti Morales,Dominique Cardon,Caterina Froio,Andrei Mogoutovet al. Statistique et Société, 2021, Gilets jaunes et Grand Débat National : outils, données et analyses, 9 (1-2), pp.79-107 Article dans une revue hal-03856216v1
About Some Boundary Integral Operators on the Unit Disk Related to the Laplace Equation Pedro Ramaciotti,Jean-Claude Nédélec SIAM Journal on Numerical Analysis, 2017, 55 (4), pp.1892 - 1914. ⟨10.1137/15M1033721⟩ Article dans une revue hal-01609519v1

Chapitre d'ouvrage (1)

Nos traces numérique au service de la régulation des plateformes Pedro Ramaciotti Morales,Jean-Philippe Cointet,Tim Faverjon Comprendre son Temps, 2, pp.58, A paraître Chapitre d'ouvrage hal-04866741v1

Communication dans un congrès (17)

Measuring ideological polarization across the world on comparable political dimensions using social media and political survey data Pedro Ramaciotti 11th International Conference on Computational Social Science (IC2S2- 2025), Jul 2025, Norköpping, Sweden Communication dans un congrès hal-05199796v1
Modeling both pairwise interactions and group effects in polarization on interaction networks Duncan Cassells,Lionel Tabourier,Pedro Ramaciotti International Conference on Complex Networks, Apr 2024, Exetrer, United Kingdom Communication dans un congrès hal-04363001v1
Discovering ideological structures in representation learning spaces in recommender systems on social media data Tim Faverjon,Pedro Ramaciotti 2023 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, Nov 2023, Kusadasi, Turkey. ⟨10.1145/3625007.3627336⟩ Communication dans un congrès hal-04297854v1
Emoji, Language Games and Political Polarisation Sara Luxmoore,Jonathan Cardoso Silva,Pedro Ramaciotti Fourth Conference on Computational Humanities Research, Dec 2023, Paris, France Communication dans un congrès hal-04297824v1
Text-free multi-issue attitude mining from social network graph data Pedro Ramaciotti Morales,Jean-Philippe Cointet,Armin Pournaki 8th International Conference on Computational Social Sciences, Jul 2022, Chicago, United States Communication dans un congrès hal-03653479v1
Measuring the accuracy of social network ideological embeddings using language models Pedro Ramaciotti Morales,Gabriel Muñoz Zolotoochin 2022 International Conference on Information Technology & Systems (ICITS22), Feb 2022, San José, Costa Rica Communication dans un congrès hal-03385061v1
Fake news diffusion in geometrical attitudinal spaces Pedro Ramaciotti Morales,Manon Berriche,Jean-Philippe Cointet 8th International Conference on Computational Social Sciences, Jul 2022, Chicago, United States Communication dans un congrès hal-03653473v1
Multidimensional online American politics: Mining emergent social cleavages in social graphs Pedro Ramaciotti Morales The 11th International Conference on Complex Networks and their Applications, Nov 2022, Palermo, Italy Communication dans un congrès hal-03721438v1
Embedding social graphs from multiple national settings in common empirical opinion spaces Pedro Ramaciotti Morales,Zografoula Vagena 2022 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, Nov 2022, Istambul, Turkey Communication dans un congrès hal-03783628v1
Ideological, semantic and geographic proximity drive following behaviour on Twitter Armin Pournaki,Pedro Ramaciotti Morales,Jean-Philippe Cointet 8th International Conference on Computational Social Sciences, Jul 2022, Chicago, United States, Jul 2022, Chicago, United States Communication dans un congrès hal-03655036v1
Uncovering the structure of the French media ecosystem Jean-Philippe Cointet,Dominique Cardon,Andreï Mogoutov,Benjamin Ooghe,Guillaume Pliqueet al. IC2S2, Jul 2021, Zurich, Switzerland. ⟨10.48550/arXiv.2107.12073⟩ Communication dans un congrès halshs-03299024v1
Unfolding the dimensionality structure of social networks in ideological embeddings Pedro Ramaciotti Morales,Jean-Philippe Cointet,Gabriel Muñoz Zolotoochin 2021 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), Nov 2021, Amsterdam, Netherlands Communication dans un congrès hal-03315759v3
Online Social Movements Dynamics in Ideological Spaces Pedro Ramaciotti Morales,Jean-Philippe Cointet 7th International Conference on Computational Social Science IC2S2, Jul 2021, Zurich, Switzerland Communication dans un congrès hal-03343536v1
Auditing the Effect of Social Network Recommendations on Polarization in Geometrical Ideological Spaces Pedro Ramaciotti Morales,Jean-Philippe Cointet RecSys ’21: 15th ACM Conference on Recommender Systems, Sep 2021, Amsterdam, Netherlands. ⟨10.1145/3460231.3478851⟩ Communication dans un congrès hal-03320208v1
Your most telling friends: Propagating latent ideological features on Twitter using neighborhood coherence Pedro Ramaciotti Morales,Jean-Philippe Cointet,Julio Laborde 2020 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), 2020, Amsterdam, Netherlands. pp.217-221, ⟨10.1109/ASONAM49781.2020.9381468⟩ Communication dans un congrès hal-03700094v1
Testing the Impact of Semantics and Structure on Recommendation Accuracy and Diversity Pedro Ramaciotti Morales,Lionel Tabourier,Raphaël Fournier-S'Niehotta ASONAM 2020. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, 2020, La Hague (virtual), Netherlands Communication dans un congrès hal-02999863v1
Role of the Website Structure in the Diversity of Browsing Behaviors Pedro Ramaciotti Morales,Lionel Tabourier,Sylvain Ung,Christophe Prieur 30th ACM Conference on Hypertext and Social Media, Sep 2019, Hof, Germany. pp.133-142, ⟨10.1145/3342220.3343648⟩ Communication dans un congrès hal-02422544v1

Rapport (2)

Depolarizing and moderating social media with AI Pedro Ramaciotti CNRS. 2024, https://static.ie.edu/CGC/AI4D%20Paper%202%20Depolarizing%20and%20Moderating%20Social%20Media%20with%20AI.pdf Rapport hal-04754503v1
Attitudinally-positioned European sample dataset Pedro Ramaciotti Morales,Jimena Royo-Letelier,Jean-Philippe Cointet,Armin Pournaki sciences po. 2024, 18 p Rapport hal-04807916v1

Autre publication scientifique (2)

Atlas multi-plateforme d’un mouvement social : le cas des Gilets jaunes Pedro Ramaciotti Morales,Jean-Philippe Cointet,Bilel Benbouzid,Dominique Cardon,Caterina Froioet al. 2021, pp.39-77 Autre publication scientifique hal-03700086v1
It’s not radical right populism! The Yellow Vests in France Caterina Froio,Pedro Ramaciotti Morales,Jean-Philippe Cointet,Omer Faruk Metin 2020 Autre publication scientifique hal-02586066v1

Poster de conférence (1)

The Effects of Disaggregated Factors of YouTube Recommendations in Diversity Pedro Ramaciotti Morales,Bilel Benbouzid,Alexis Perrier,Emma Gauthier International Conference on Computational Social Science IC2S2, Jul 2020, Cambridge, MA, United States. 2020 Poster de conférence hal-03580268v1

Thèse (1)

Theoretical and numerical aspects of wave propagation phenomena in complex domains and applications to remote sensing Pedro Ramaciotti Morales Analysis of PDEs [math.AP]. Université Paris Saclay (COmUE), 2016. English. ⟨NNT : 2016SACLX063⟩ Thèse tel-01494464v1