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Place ENS Paris Saclay 1B26
Séminaire semestriel du 4 juin2026
Alice Nappa
Title: Healing the infosphere: A mathematical formulation for breaking the echo chambers
Summary: The aim of the project is to create a mathematical framework able to describe the phenomenons of the online opinion ecosystem. Our model involves agents with opinions and we show how a new type of agents with a different update rule can trigger a phase transition from a polarised state to a state of free exploration of the opinion space -- breaking the echo chambers. We solved the model analytically providing physics-inspired insights to what forces and mechanisms rule the infosphere and what order parameters control its phase transitions.
Adhémar de Senneville
Title: Améliorer les modèles multimodaux à la classification d’images (Improving Multimodal Models for Image Classification)
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Gaëtan Serré
Title: Towards a Formal Foundation for Global Optimization
Summary: Formal methods enable us to guarantee the correctness of mathematical results. Today, they are increasingly used in applied mathematics, particularly in machine learning. I will provide a brief introduction to Lean, a very popular proof assistant, and present recent work aimed at building a formal foundation for global optimization. This foundation opens up possibilities for mechanized verification and integration with emerging tools such as language models.
Clément Francqueville
Title: Développement d'une interface pour malvoyant dans le cadre de la pratique sportive
Summary:
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