Search Results for author: Romaric Gaudel

Found 13 papers, 2 papers with code

Low-Cost Privacy-Aware Decentralized Learning

no code implementations18 Mar 2024 Sayan Biswas, Davide Frey, Romaric Gaudel, Anne-Marie Kermarrec, Dimitri Lerévérend, Rafael Pires, Rishi Sharma, François Taïani

This paper introduces ZIP-DL, a novel privacy-aware decentralized learning (DL) algorithm that relies on adding correlated noise to each model update during the model training process.

Privacy Preserving

UniRank: Unimodal Bandit Algorithm for Online Ranking

no code implementations2 Aug 2022 Camille-Sovanneary Gauthier, Romaric Gaudel, Elisa Fromont

The semi-bandit version, where a full matching is sampled at each iteration, has been addressed by \cite{ADMA}, creating an algorithm with an expected regret matching $O(\frac{L\log(L)}{\Delta}\log(T))$ with $2L$ players, $T$ iterations and a minimum reward gap $\Delta$.

Unimodal Mono-Partite Matching in a Bandit Setting

no code implementations2 Aug 2022 Romaric Gaudel, Matthieu Rodet

The semi-bandit version, where a full matching is sampled at each iteration, has been addressed by \cite{ADMA}, creating an algorithm with an expected regret matching $O(\frac{L\log(L)}{\Delta}\log(T))$ with $2L$ players, $T$ iterations and a minimum reward gap $\Delta$.

s-LIME: Reconciling Locality and Fidelity in Linear Explanations

no code implementations2 Aug 2022 Romaric Gaudel, Luis Galárraga, Julien Delaunay, Laurence Rozé, Vaishnavi Bhargava

The benefit of locality is one of the major premises of LIME, one of the most prominent methods to explain black-box machine learning models.

Hybrid Recommender System based on Autoencoders

4 code implementations24 Jun 2016 Florian Strub, Romaric Gaudel, Jérémie Mary

A standard model for Recommender Systems is the Matrix Completion setting: given partially known matrix of ratings given by users (rows) to items (columns), infer the unknown ratings.

Collaborative Filtering Matrix Completion +1

AUC Optimisation and Collaborative Filtering

no code implementations25 Aug 2015 Charanpal Dhanjal, Romaric Gaudel, Stephan Clemencon

With this in mind, we propose a class of objective functions over matrix factorisations which primarily represent a smooth surrogate for the real AUC, and in a special case we show how to prioritise the top of the list.

Collaborative Filtering Recommendation Systems

Bandits Warm-up Cold Recommender Systems

no code implementations10 Jul 2014 Jérémie Mary, Romaric Gaudel, Preux Philippe

Finally, experimental evidence confirm that our algorithm is effective in dealing with the cold start problem on publicly available datasets.

Multi-Armed Bandits Recommendation Systems

Efficient Eigen-updating for Spectral Graph Clustering

no code implementations7 Jan 2013 Charanpal Dhanjal, Romaric Gaudel, Stéphan Clémençon

Namely, the method promoted in this article can be viewed as an incremental eigenvalue solution for the spectral clustering method described by Ng.

Clustering Graph Clustering +1

Feature Selection as a One-Player Game

no code implementations International Conference on Machine Learning 2010 2010 Romaric Gaudel, Michèle Sebag

This paper formalizes Feature Selection as a Reinforcement Learning problem, leading to a provably optimal though intractable selection policy.

Automated Feature Engineering feature selection +1

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