English
Graphons and graphexes as limits of sparse graphs - lecture 1
Post-edited
Auteurs : Chayes, Jennifer Tour (Auteur de la conférence)
CIRM (Editeur )
05C60 - Isomorphism problems (reconstruction conjecture, perfect graphs, etc.)
05C80 - Random graphs
60F10 - Large deviations
82B20 - Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs
CIRM (Editeur )
Résumé :
Graphons and graphexes are limits of graphs which allow us to model and estimate properties of large-scale networks. In this pair of talks, we review the theory of dense graph limits, and give two alterative theories for limits of sparse graphs – one leading to unbounded graphons over probability spaces, and the other leading to bounded graphons (and graphexes) over sigma-finite measure spaces. Talk I, given by Jennifer, will review the general theory, highlight the unbounded graphons, and show how they can be used to consistently estimate properties of large sparse networks. This talk will also give an application of these sparse graphons to collaborative filtering on sparse bipartite networks. Talk II, given by Christian, will recast limits of dense graphs in terms of exchangeability and the Aldous Hoover Theorem, and generalize this to obtain sparse graphons and graphexes as limits of subgraph samples from sparse graph sequences. This will provide a dual view of sparse graph limits as processes and random measures, an approach which allows a generalization of many of the well-known results and techniques for dense graph sequences.
Mots-Clés : sparse graphs; graphex; dense exchangeable graphs; graphon; network data; Aldous Hoover theorem
Codes MSC : Mots-Clés : sparse graphs; graphex; dense exchangeable graphs; graphon; network data; Aldous Hoover theorem
05C60 - Isomorphism problems (reconstruction conjecture, perfect graphs, etc.)
05C80 - Random graphs
60F10 - Large deviations
82B20 - Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs
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Informations sur la Vidéo
Réalisateur : Hennenfent, GuillaumeLangue : Anglais Date de Publication : 11/09/2018 Date de Captation : 28/08/2018 Sous Collection : Research talks Catégorie arXiv : Statistics Theory ; Combinatorics ; Probability Domaine(s) : Combinatoires Format : MP4 (.mp4) - HD Durée : 00:48:23 Audience : Chercheurs Download : https://videos.cirm-math.fr/2018-08-28_Chayes.mp4 
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Informations sur la Rencontre
Nom de la Rencontre : Advances in Statistical Mechanics / Avancées en mécanique statistiqueOrganisateurs de la Rencontre : Arguin, Louis-Pierre ; Gayrard, Véronique ; Kistler, Nicola ; Kourkova, Irina Dates : 27/08/2018 - 31/08/2018 Année de la rencontre : 2018 URL de la Rencontre : https://conferences.cirm-math.fr/1855.html
Données de citation
DOI : 10.24350/CIRM.V.19442003Citer cette vidéo: Chayes, Jennifer Tour (2018). Graphons and graphexes as limits of sparse graphs - lecture 1. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19442003 URI : http://dx.doi.org/10.24350/CIRM.V.19442003 |
Voir Aussi
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Bibliographie
