Colloquium Loria : prochain exposé avec Claire Mathieu

13 novembre 2018

Claire Mathieu, directrice de recherche CNRS est l’invitée du prochain colloquium du Loria. Rendez-vous le mardi 27 novembre à 13h30 au Loria pour son exposé intitulé “Stable Matching in Practice”.


Stable matching methods, based on the algorithm designed by Gale and Shapley, are used around the world in many applications such as college admissions. Several criteria measure the quality of the result: number of students assigned; rank of the college assigned to the applicant in their preference list; robustness; running time; etc.

After reviewing properties of the algorithm in the pure, ideal setting, we present issues arising in practice. The input data is uncertain and evolves with time, so a one-shot algorithm does not suffice. It is not feasible for admission committees to meet continuously, so the process cannot be fully dynamic. To reconcile those competing constraints, a hybrid implementation proceeding partly online on the student side was recently proposed for college admissions in France. The system also incorporates side constraints on joint assignment to schools and to dorms.

About the Speaker

Claire Mathieu does research on the design and analysis of algorithms, with a focus on approximation algorithms, particularly approximation schemes for NP-hard problems. A former student of Ecole normale supérieure, she received a PhD in Computer Science in 1988 at Paris-Sud University. She has held research and faculty positions at CNRS, Paris-Sud University, Ecole Polytechnique, Brown University, and Collège de France. She is currently a CNRS research director in Paris, France.


Les personnes extérieures au Loria doivent s’inscrire par email auprès de marie.baron (at) avant le vendredi 23 novembre.