The use of networks to elicit information about agents’ characteristics, either by constructing mechanisms where agents report on their neighbors or mechanisms where agents reveal their position in a network; “network interdiction” pitting an attacker (whose objective is to capture nodes) against a defender (who protects nodes and designs the network); markets for intermediation and platforms using the theory of two-sided markets, with an interest in various forms of exchange for personal data and the impact on market structure and advertising; contagion in financial networks; optimal targeting strategies in networks; cascading failures on networks; models of anti-conformity and conformity (threshold models, aggregation models, signed graphs); contagion on infinite networks; opinion formation and network formation by homophily; ranking methods and their axiomatic characterizations; opinion dynamics; strategic network formation and externalities; favoritism and influence in organizations; existence and refinements of pairwise stable networks; dynamic competition on social networks.
Chercheurs : Philippe Bich, Francis Bloch, Bernard Caillaud, Gabrielle Demange, Michel Grabisch, Matt Leduc, Antoine Mandel, Agnieszka Rusinowska, Nikhil Vellodi, Xavier Venel