no code implementations • 1 Mar 2024 • Lucas Schott, Josephine Delas, Hatem Hajri, Elies Gherbi, Reda Yaich, Nora Boulahia-Cuppens, Frederic Cuppens, Sylvain Lamprier
Deep Reinforcement Learning (DRL) is an approach for training autonomous agents across various complex environments.
1 code implementation • 21 Jun 2022 • Pol Labarbarie, Hatem Hajri, Marc Arnaudon
Certification of neural networks is an important and challenging problem that has been attracting the attention of the machine learning community since few years.
no code implementations • 16 Jun 2022 • Martin Gonzalez, Hatem Hajri, Loic Cantat, Mihaly Petreczky
We investigate the problems and challenges of evaluating the robustness of Differential Equation-based (DE) networks against synthetic distribution shifts.
no code implementations • 24 May 2022 • Martin Gonzalez, Thibault Defourneau, Hatem Hajri, Mihaly Petreczky
In this paper we show that neural ODE analogs of recurrent (ODE-RNN) and Long Short-Term Memory (ODE-LSTM) networks can be algorithmically embeddeded into the class of polynomial systems.
2 code implementations • 7 Apr 2021 • Lucas Schott, Hatem Hajri, Sylvain Lamprier
Existing approaches of the literature to generate meaningful disturbances of the environment are adversarial reinforcement learning methods.
3 code implementations • 24 Nov 2020 • Manon Césaire, Lucas Schott, Hatem Hajri, Sylvain Lamprier, Patrick Gallinari
This paper introduces stochastic sparse adversarial attacks (SSAA), standing as simple, fast and purely noise-based targeted and untargeted attacks of neural network classifiers (NNC).
2 code implementations • 12 Jul 2020 • Théo Combey, António Loison, Maxime Faucher, Hatem Hajri
Neural network classifiers (NNCs) are known to be vulnerable to malicious adversarial perturbations of inputs including those modifying a small fraction of the input features named sparse or $L_0$ attacks.
1 code implementation • ICLR 2019 • Nina Miolane, Alice Le Brigant, Johan Mathe, Benjamin Hou, Nicolas Guigui, Yann Thanwerdas, Stefan Heyder, Olivier Peltre, Niklas Koep, Hadi Zaatiti, Hatem Hajri, Yann Cabanes, Thomas Gerald, Paul Chauchat, Christian Shewmake, Bernhard Kainz, Claire Donnat, Susan Holmes, Xavier Pennec
We introduce Geomstats, an open-source Python toolbox for computations and statistics on nonlinear manifolds, such as hyperbolic spaces, spaces of symmetric positive definite matrices, Lie groups of transformations, and many more.
no code implementations • 5 Feb 2020 • Jeanine Harb, Nicolas Rébéna, Raphaël Chosidow, Grégoire Roblin, Roman Potarusov, Hatem Hajri
In the realm of autonomous transportation, there have been many initiatives for open-sourcing self-driving cars datasets, but much less for alternative methods of transportation such as trains.
2 code implementations • 2 Jul 2019 • Thomas Gerald, Hadi Zaatiti, Hatem Hajri, Nicolas Baskiotis, Olivier Schwander
Considering the success of hyperbolic representations of graph-structured data in last years, an ongoing challenge is to set up a hyperbolic approach for the community detection problem.