Search Results for author: Thomas Nedelec

Found 3 papers, 0 papers with code

Bridging the gap between regret minimization and best arm identification, with application to A/B tests

no code implementations9 Oct 2018 Rémy Degenne, Thomas Nedelec, Clément Calauzènes, Vianney Perchet

State of the art online learning procedures focus either on selecting the best alternative ("best arm identification") or on minimizing the cost (the "regret").

Offline A/B testing for Recommender Systems

no code implementations22 Jan 2018 Alexandre Gilotte, Clément Calauzènes, Thomas Nedelec, Alexandre Abraham, Simon Dollé

Before A/B testing online a new version of a recommender system, it is usual to perform some offline evaluations on historical data.

counterfactual Product Recommendation +1

A comparative study of counterfactual estimators

no code implementations3 Apr 2017 Thomas Nedelec, Nicolas Le Roux, Vianney Perchet

We provide a comparative study of several widely used off-policy estimators (Empirical Average, Basic Importance Sampling and Normalized Importance Sampling), detailing the different regimes where they are individually suboptimal.

counterfactual

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