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 …

networks can also be shown to have larger aggregate payoff. I then estimate the model using a network of coinventors and …This paper analyzes the formation of networks in which each agent is assumed to possess some information of value to … the other agents in the network. Agents derive payoff from having access to the information of others through …

We present a new approach to the study of networks where the formation of links is driven by unilateral initiative of … nodes. First, we propose a mathematical description of the extreme introvert and extrovert model (XIE), a dynamic network … generalization of the model in which intermittent states can make the evolution of connectivity slower. In this class of networks …

networks form, the impact of network structure on agents' outcomes, and the evolution of networks over time. For this purpose … proportional to her Bonacich centrality, with an endogenous network formation process. Links are formed on the basis of agents …' centrality while the network is exposed to a volatile environment introducing interruptions in the connections between agents. A …

This paper presents a model of strategic network formation with local complementarities in effort levels and positive …-sided link formation. (Pairwise) Nash equilibrium networks are shown to be nested split graphs, which are a strict subset of core …-periphery networks. The relevance of the convexity of the value function in obtaining these structures is highlighted. In equilibrium …

only efficient networks are the complete and the empty network. Furthermore, there exists a range of linking cost such that …This paper presents a simple model of strategic network formation with local complementarities in effort levels and … creation. In both cases (pairwise) Nash equilibrium networks are nested split graphs, which are a strict subset of core …

studying econometric methods for the analysis of social networks. We begin by providing a common framework for models of social … effects, a class that includes the 'linear-in-means' local average model, the local aggregate model, and models where network …/quasi-experimental data. We then discuss models of network formation, drawing on a range of literatures to cover purely predictive models …