Field studies of networks have uncovered a preference to befriend people we perceive as similar according to some … dimensions of our identity (“homophily”). Lab studies of network formation games have found that adherence to social norms of … reciprocity and inequity aversion are also drivers of network choices. No study so far has attempted to investigate the role of …

This paper proposes new centrality measures to characterise the 'key class', when agents in a network are sorted into … activity of classes with their position within the partitioned network. The result informs two class-based centrality measures … role-equivalent classes, such that its removal results in an optimal change in the network activity. The notion of role …

exists a pairwise stable network, which is also efficient. We show that all pairwise stable networks are efficient, and hence … placing its data on others’ storage devices, given the prevailing data loss rate in the network. The cost function of an agent … captures the cost that the agent incurs to maintain links in the network. With this utility function, we analyze what network …

This paper develops a simple model in which a social hierarchy emerges endogenously when agents form a network for …, as well as their value function, increases (strictly) concavely in the total activity of their neighbours in the network …. There exists a unique and stable positive activity equilibrium on exogenous networks under mild conditions. When we …

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 …

We develop a model of contests on networks. Each player is “connected” to a set of contests and exerts a single effort … many well-known results from the contest literature can be obtained by varying the structure of the network. Our framework …

split graph. However, the socially optimal network may be different from equilibrium networks and efficient effort levels do …This paper provides a game-theoretic model of network formation with a continuous effort choice. Efforts are strategic … complements for direct neighbors in the network and display global substitution/congestion effects. We show that if the parameter …