Strategic Disclosure of Opinions on a Social Network

Umberto Grandi (University of Toulouse), Emiliano Lorini (University of Toulouse), Arianna Novaro (University of Toulouse), Laurent Perrussel (University of Toulouse)

Abstract

This paper starts from a simple model of strategic reasoning in situations of social influence. Agents express binary views on a set of propositions, and iteratively update their views by taking into account the expressed opinion of their influencers. We empower agents with the ability to disclose or hide their opinions, in order to attain a predetermined goal. We study classical game-theoretic solution concepts in the resulting games, observing a non-trivial interplay between the individual goals and the structure of the underlying network. By making use of different logics for strategic reasoning, we show how apparently simple problems in strategic opinion diffusion require a complex logical machinery to be properly formalized and handled.