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GSI 2021 – 5th conference on Geometric Science of Information

21/07/2021 – 23/07/2021 @ Toute la journée – La conférence Geometric Science of Information aura lieu à Paris Sorbonne du 21 juillet au 23 juillet 2021. La thématique cette année se portera particulièrement sur les outils géométriques pour l’apprentissage. Pour rappel, la précédente édition GSI’19 s’est tenue à l’Enac-Toulouse en août 2019. GSI 2021

Webinaire DEVI – Elsa Cazelles (CNRS / IRIT)

08/04/2021 @ 10h30 – 11h30 – Optimal (weak) transport and barycenters Résumé: We introduce the weak barycenter of a family of probability distributions, based on the recently developed notion of optimal weak transport of measures. We provide a theoretical analysis of the weak barycenter and its relationship to the classic Wasserstein barycenter, and discuss its meaning in the light of convex […]

Webinaire DEVI – Davide Scotti (University of Bergamo, Italie)

25/03/2021 @ 10h30 – 11h30 – The impact of LCCs’ growth on the air networks of European NCs Résumé: We study how European network carriers’ (NCs’) air networks evolved in response to competitive inroads by low-cost carriers (LCCs) over the last two decades. As LCCs added routes and increased their market shares, NCs reacted by reconfiguring their networks. Specifically, we find […]

Webinaire DEVI – Guillaume Pommey (University degli Studi di Roma Tor Vergata, Italie)

11/03/2021 @ 10h30 – 11h30 – How to Regulate Modern Aiports? Résumé: In addition to the provision of aeronautical services, modern airports are also in charge of providing commercial services to passengers as well as investing in their infrastructure. We investigate the optimal regulation of airports and its implementation. Optimal prices for aeronautical services and commercial services follow a Ramsey-Boiteux pricing […]

Webinaire DEVI – Marc Ivaldi (TSE, EHESS)

11/02/2021 @ 10h30 – 11h30 – Agglomeration, Transport and Productivity: Evidence from Toulouse Metropolitan Area Résumé: Economic activity tends to be highly concentrated. These agglomeration or concentration forces are driven by spatial externalities on productivity, and are named agglomeration externalities. Transport improvements – by reducing the interaction cost between economic agents placed in different locations – can extend the geographic scope […]

Webinaire DEVI – Paul Rochet (ENAC)

10/12/2020 @ 10h30 – 11h30 – A coupling of the spectral measures at a vertex Résumé I will introduce a particular coupling of the spectral measures at the vertices of a graph, whose moments count the rooted closed paths in the graph. The resulting joint spectral measure verifies numerous interesting properties that allow to recover minors of analytical functions of the […]

Webinaire DEVI – Miguel Urdanoz (TBS)

26/11/2020 @ 10h30 – 11h30 – Airline Scheduling: learning from past errors Résumé On time performance is a key attribute to attract airline’s customers. Airlines can control on time performance by enlarging schedule times and indeed airlines have been doing so over the last decades although this implies higher costs for their operations. For instance, according to Zhang et al (2018) […]

Webinaire DEVI – Bertrand Jouve (CNRS)

12/11/2020 @ 10h30 – 11h30 – Graph Mining by Vertex Dismantlings Résumé When considering the topology of complex networks, an important question is how local topological constraints impact the overall topology of the network. This issue is addressed from a mathematical perspective by examining some particular families of graphs. For these graphs, the results of an exploration of the vertices in […]

Séminaire DEVI – Pierre-Cyril Aubin-Frankowski (Mines ParisTech)

08/10/2020 @ 10h30 – 11h30 – Contrôle optimal linéaire-quadratique à contraintes d’état comme une régression par méthodes à noyaux sous contraintes de forme Résumé Les problèmes de régression en contrôle ou en apprentissage incorporent fréquemment des contraintes de forme, comme par exemple la positivité ou la monotonie de la solution sur un compact donné. Ces contraintes traduisent des a priori qualitatifs […]