Pedro Ramaciotti Morales

43
Documents

Publications

Publications

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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-05199796 v1
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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-04363001 v1
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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-04297854 v1
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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-04297824 v1
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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-03783628 v1
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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-03655036 v1
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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-03653473 v1
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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-03385061 v1
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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-03653479 v1
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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-03721438 v1
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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-03320208 v1
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Uncovering the structure of the French media ecosystem

Jean-Philippe Cointet , Dominique Cardon , Andreï Mogoutov , Benjamin Ooghe , Guillaume Plique et al.
IC2S2, Jul 2021, Zurich, Switzerland. ⟨10.48550/arXiv.2107.12073⟩
Communication dans un congrès halshs-03299024 v1
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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-03315759 v3
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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-03343536 v1
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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-03700094 v1
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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-02999863 v1
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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-02422544 v1
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Web Crawler Restrictions, AI Training Datasets & Political Biases

Paul Bouchaud , Pedro Ramaciotti
2025
Pré-publication, Document de travail hal-05302425 v1
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Tracking Inauthentic Amplification on Social Media: A Scalable Method to Detect Duplicated Messages

Manon Richard , Agnès Mustar , Lisa Giordani , Cristián Brokate , Pauline Bouchaud et al.
2025
Pré-publication, Document de travail hal-05301215 v1
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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-05188170 v1
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Expressing One's Identity Online: Left-Right and cross EU-country variation in self-representation in social media

Carlo Romano Marcello Alessandro Santagiustina , Jean-Philippe Cointet , Pedro Ramaciotti Morales
2025
Pré-publication, Document de travail (preprint/prepublication) hal-04874311 v2
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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-05146797 v1
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Online Petitions and their Social Media Ecosystem

Carlo Romano Marcello Alessandro Santagiustina , Pedro Ramaciotti Morales
2025
Pré-publication, Document de travail hal-05264876 v1
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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 Crépel et al.
2025
Pré-publication, Document de travail hal-05222448 v1
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Inferring Attitudinal Spaces in Social Networks

Pedro Ramaciotti Morales , Jean-Philippe Cointet , Gabriel Muñoz Zolotoochin , Antonio Fernández Peralta , Gerardo Iñiguez et al.
2022
Pré-publication, Document de travail hal-03573188 v1
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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-03725556 v2
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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-03046284 v1
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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-04699600 v1
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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-04837623 v1
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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-04363008 v1
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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-03668042 v3
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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-03606955 v1
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Measuring diversity in heterogeneous information networks

Pedro Ramaciotti Morales , Robin Lamarche-Perrin , Raphaël Fournier-S'Niehotta , Rémy Poulain , Lionel Tabourier et al.
Theoretical Computer Science, 2021, 859, pp.80-115. ⟨10.1016/j.tcs.2021.01.013⟩
Article dans une revue hal-03608575 v1
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What colours are the yellow vests? An ideological scaling of Facebook groups

Jean-Philippe Cointet , Pedro Ramaciotti Morales , Dominique Cardon , Caterina Froio , Andrei Mogoutov et al.
Statistique et Société, 2021, Statistique et Société, 9 (1-2), pp.79-107
Article dans une revue halshs-03299366 v1
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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 Mogoutov et 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-03856216 v1

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-01609519 v1
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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-04754503 v1
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Attitudinally-positioned European sample dataset

Pedro Ramaciotti Morales , Jimena Royo-Letelier , Jean-Philippe Cointet , Armin Pournaki
sciences po. 2024, 18 p
Rapport hal-04807916 v1

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-03580268 v1