We introduce a simple two-stage game of endogenous network formation and information sharing for reasoning about the … optimal design of social networks like Facebook or Google+. We distinguish between unilateral and bilateral connections and … then we study how the network design and the utility specifications affect welfare. Surprisingly, we find that in general …

We analyze R&D collaboration networks in industries where firms are competitors in the product market. Firms' benefits … characterization of both equilibrium networks and endogenous production choices in the form of a Gibbs measure. We analyze the … efficient network maximizing social welfare, and find that the efficient graph is either empty, complete or shows a strong core …

We propose a random network model incorporating heterogeneity of agents and a continuous notion of homophily. Unlike … equality of agents. We show that if links between similar agents are indeed more likely, our homophilous random network model … social network. …

, models of network formation, models for the statistical analysis of social networks, as well as community detection. …In this chapter, I provide an overview of research on social networks and their role in shaping behavior and economic … outcomes. I include discussion of empirical and theoretical analyses of the role of social networks in markets and exchange …