optimal design of social networks like Facebook or Google+. We distinguish between unilateral and bilateral connections and … "babblers" or "friends", irrespective of whether the network is unilateral or bilateral, in equilibrium, targeted information …

The novelty of our model is to combine models of collective action on networks with models of social learning. Agents …

We survey the literature on social networks by putting together the economics, sociological and physics … network formation. While the physics/applied mathematics approach is capable of reproducing most observed networks, it does … not explain why they emerge. On the contrary, the economics approach is very precise in explaining why networks emerge but …

than the standard mean-field approach to describe the diffusion dynamics of multiple activities on complex networks. We …

associated social cliques (consisting of groups of individuals linked to each other at zero cost, such as friendship networks …) ensure the emergence of communication networks that lead to asymptotic learning. Our result shows that societies with too …