Search Results for author: Geovani Rizk

Found 10 papers, 3 papers with code

Randomization matters How to defend against strong adversarial attacks

no code implementations ICML 2020 Rafael Pinot, Raphael Ettedgui, Geovani Rizk, Yann Chevaleyre, Jamal Atif

We demonstrate the non-existence of a Nash equilibrium in our game when the classifier and the adversary are both deterministic, hence giving a negative answer to the above question in the deterministic regime.

ByzFL: Research Framework for Robust Federated Learning

1 code implementation30 May 2025 Marc González, Rachid Guerraoui, Rafael Pinot, Geovani Rizk, John Stephan, François Taïani

We present ByzFL, an open-source Python library for developing and benchmarking robust federated learning (FL) algorithms.

Benchmarking Federated Learning

Could ChatGPT get an Engineering Degree? Evaluating Higher Education Vulnerability to AI Assistants

no code implementations7 Aug 2024 Beatriz Borges, Negar Foroutan, Deniz Bayazit, Anna Sotnikova, Syrielle Montariol, Tanya Nazaretzky, Mohammadreza Banaei, Alireza Sakhaeirad, Philippe Servant, Seyed Parsa Neshaei, Jibril Frej, Angelika Romanou, Gail Weiss, Sepideh Mamooler, Zeming Chen, Simin Fan, Silin Gao, Mete Ismayilzada, Debjit Paul, Alexandre Schöpfer, Andrej Janchevski, Anja Tiede, Clarence Linden, Emanuele Troiani, Francesco Salvi, Freya Behrens, Giacomo Orsi, Giovanni Piccioli, Hadrien Sevel, Louis Coulon, Manuela Pineros-Rodriguez, Marin Bonnassies, Pierre Hellich, Puck van Gerwen, Sankalp Gambhir, Solal Pirelli, Thomas Blanchard, Timothée Callens, Toni Abi Aoun, Yannick Calvino Alonso, Yuri Cho, Alberto Chiappa, Antonio Sclocchi, Étienne Bruno, Florian Hofhammer, Gabriel Pescia, Geovani Rizk, Leello Dadi, Lucas Stoffl, Manoel Horta Ribeiro, Matthieu Bovel, Yueyang Pan, Aleksandra Radenovic, Alexandre Alahi, Alexander Mathis, Anne-Florence Bitbol, Boi Faltings, Cécile Hébert, Devis Tuia, François Maréchal, George Candea, Giuseppe Carleo, Jean-Cédric Chappelier, Nicolas Flammarion, Jean-Marie Fürbringer, Jean-Philippe Pellet, Karl Aberer, Lenka Zdeborová, Marcel Salathé, Martin Jaggi, Martin Rajman, Mathias Payer, Matthieu Wyart, Michael Gastpar, Michele Ceriotti, Ola Svensson, Olivier Lévêque, Paolo Ienne, Rachid Guerraoui, Robert West, Sanidhya Kashyap, Valerio Piazza, Viesturs Simanis, Viktor Kuncak, Volkan Cevher, Philippe Schwaller, Sacha Friedli, Patrick Jermann, Tanja Käser, Antoine Bosselut

We investigate the potential scale of this vulnerability by measuring the degree to which AI assistants can complete assessment questions in standard university-level STEM courses.

Overcoming the Challenges of Batch Normalization in Federated Learning

1 code implementation23 May 2024 Rachid Guerraoui, Rafael Pinot, Geovani Rizk, John Stephan, François Taiani

Batch normalization has proven to be a very beneficial mechanism to accelerate the training and improve the accuracy of deep neural networks in centralized environments.

Federated Learning

Adaptive Gradient Clipping for Robust Federated Learning

no code implementations23 May 2024 Youssef Allouah, Rachid Guerraoui, Nirupam Gupta, Ahmed Jellouli, Geovani Rizk, John Stephan

Robust federated learning aims to maintain reliable performance despite the presence of adversarial or misbehaving workers.

ARC Federated Learning +2

Byzantine-Robust Federated Learning: Impact of Client Subsampling and Local Updates

no code implementations20 Feb 2024 Youssef Allouah, Sadegh Farhadkhani, Rachid Guerraoui, Nirupam Gupta, Rafael Pinot, Geovani Rizk, Sasha Voitovych

The natural approach to robustify FL against adversarial clients is to replace the simple averaging operation at the server in the standard $\mathsf{FedAvg}$ algorithm by a \emph{robust averaging rule}.

Federated Learning image-classification +1

An $α$-No-Regret Algorithm For Graphical Bilinear Bandits

no code implementations1 Jun 2022 Geovani Rizk, Igor Colin, Albert Thomas, Rida Laraki, Yann Chevaleyre

We propose the first regret-based approach to the Graphical Bilinear Bandits problem, where $n$ agents in a graph play a stochastic bilinear bandit game with each of their neighbors.

Refined bounds for randomized experimental design

no code implementations22 Dec 2020 Geovani Rizk, Igor Colin, Albert Thomas, Moez Draief

Experimental design is an approach for selecting samples among a given set so as to obtain the best estimator for a given criterion.

Experimental Design

Best Arm Identification in Graphical Bilinear Bandits

no code implementations14 Dec 2020 Geovani Rizk, Albert Thomas, Igor Colin, Rida Laraki, Yann Chevaleyre

We study the best arm identification problem in which the learner wants to find the graph allocation maximizing the sum of the bilinear rewards.

Randomization matters. How to defend against strong adversarial attacks

1 code implementation26 Feb 2020 Rafael Pinot, Raphael Ettedgui, Geovani Rizk, Yann Chevaleyre, Jamal Atif

We demonstrate the non-existence of a Nash equilibrium in our game when the classifier and the Adversary are both deterministic, hence giving a negative answer to the above question in the deterministic regime.

Cannot find the paper you are looking for? You can Submit a new open access paper.