"Propositional Opinion Diffusion", Umberto Grandi, Colloque de l'IRIT

le 24 février 2015


Umberto Grandi, maitre de conférences à l'Université Toulouse 1 Capitole nous présentera ses travaux sur le "Propositional Opinion Diffusion”

Umberto Grandi est maitre de conférences à l'Université Toulouse 1 Capitole. Il donnera ce séminaire entièrement en anglais.

Abstract: We present a formal model of opinion diffusion and formation which combines notions from social network analysis together with concepts and techniques from judgment aggregation and merging. The model allows us to study the propagation of individual opinions, represented in the form of yes/no answers to a set of multiple binary issues, in a multiagent system linked by an influence network.
The process is iterative with discrete time. We are interested in characterizing properties of the network structure which guarantee convergence of the iterative process for every initial configuration of the agents’ opinions, and in developing tractable algorithms  for computing the set of opinions at convergence. [Joint work with Emiliano Lorini and Laurent Perrussel]
Mis à jour le 24 février 2015