57 citations · 134 across the 21 of their papers we have counts for
14 papers · 1 filter
The price of unfairness in linear bandits with biased feedback
Solenne Gaucher, Alexandra Carpentier, Christophe Giraud
In this paper, we study the problem of fair sequential decision making with biased linear bandit feedback. At each round, a player selects an action described by a covariate and by…
Localization in 1D non-parametric latent space models from pairwise affinities
Christophe Giraud, Yann Issartel, Nicolas Verzelen
We consider the problem of estimating latent positions in a one-dimensional torus from pairwise affinities. The observed affinity between a pair of items is modeled as a noisy obse…
Partial recovery bounds for clustering with the relaxed means
Christophe Giraud, Nicolas Verzelen
We investigate the clustering performances of the relaxed means in the setting of sub-Gaussian Mixture Model (sGMM) and Stochastic Block Model (SBM). After identifying the appro…
PECOK: a convex optimization approach to variable clustering
Florentina Bunea, Christophe Giraud, Martin Royer +1
The problem of variable clustering is that of grouping similar components of a -dimensional vector , and estimating these groups from independent cop…
Aggregation of predictors for nonstationary sub-linear processes and online adaptive forecasting of time varying autoregressive processes
Christophe Giraud, François Roueff, Andres Sanchez-Perez
In this work, we study the problem of aggregating a finite number of predictors for nonstationary sub-linear processes. We provide oracle inequalities relying essentially on three…
Discussion: Latent variable graphical model selection via convex optimization
Christophe Giraud, Alexandre Tsybakov
Discussion of "Latent variable graphical model selection via convex optimization" by Venkat Chandrasekaran, Pablo A. Parrilo and Alan S. Willsky [arXiv:1008.1290].