Fiche de PRESIGNY Charley

Titre : Characterization of multilayer networks: theory and applications to the brain
Date : 6 octobre 2023
Heure: 14:00
Résumé : Although recent studies started to characterize layer properties in themselves, layer characterization as well as its interplay with the classical node characterization still remain to be explored in multilayer networks.Here, we propose the node-layer duality, a unifying framework to study the structural properties of nodes and layers. Using a perturbation approach with links rewiring, we analytically derive and numerically validate a formal duality relationship between the node and layer dimensions. A closed-form of the duality is provided for random multilayer networks. Node-layer duality allowed us to better characterize real-world multilayer networks (biological, transport, social…). Also, we find that Alzheimer's disease seems not only characterized by the connectivity disruption in specific brain regions, but more importantly by the aberrant coordination among frequencies. Altogether, results uncover complementary and previously unappreciated properties of multilayer networks.
Lieu : Auditorium de l'Institut du Cerveau, 47, boulevard de l'hôpital 75013 Paris