Search Results for author: Stefan Magureanu

Found 4 papers, 1 papers with code

The Klarna Product Page Dataset: Web Element Nomination with Graph Neural Networks and Large Language Models

1 code implementation3 Nov 2021 Alexandra Hotti, Riccardo Sven Risuleo, Stefan Magureanu, Aref Moradi, Jens Lagergren

To address this, we introduce the Klarna Product Page Dataset, a comprehensive and diverse collection of webpages that surpasses existing datasets in richness and variety.

Classification Language Modelling +2

Online Learning of Optimally Diverse Rankings

no code implementations13 Sep 2021 Stefan Magureanu, Alexandre Proutiere, Marcus Isaksson, Boxun Zhang

In absence of any contextual information about the query, one often has to adhere to the {\it diversity} principle, i. e., to return a list covering the various possible topics or meanings of the query.

Learning-To-Rank

Minimal Exploration in Structured Stochastic Bandits

no code implementations NeurIPS 2017 Richard Combes, Stefan Magureanu, Alexandre Proutiere

This paper introduces and addresses a wide class of stochastic bandit problems where the function mapping the arm to the corresponding reward exhibits some known structural properties.

Thompson Sampling

Lipschitz Bandits: Regret Lower Bounds and Optimal Algorithms

no code implementations19 May 2014 Stefan Magureanu, Richard Combes, Alexandre Proutiere

For discrete Lipschitz bandits, we derive asymptotic problem specific lower bounds for the regret satisfied by any algorithm, and propose OSLB and CKL-UCB, two algorithms that efficiently exploit the Lipschitz structure of the problem.

Multi-Armed Bandits

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