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

We develop a dynamic network formation model that can explain the observed nestedness in real-world networks. Links are … identify the networks to which the network formation process converges and find that they are nested split graphs. We … by real-world networks. Using four different network datasets, we empirically test our model and show that it fits well …

We provide an overview on networks in economics. We first look at the theoretical aspects of network economics using a … game-theoretical approach. We derive some results on games on networks and network formation. We also study what happens … empirical-relevant questions by mainly focusing on labor-market networks and crime networks. We provide some empirical evidence …

individual positions in the network. We derive a number of results with regard to equilibrium networks: (i) socialization among …We analyze a model of network formation with agents that belong to different communities and an endogenous cost … connection decrease with distance in the network, while the cost of a link depends on the type of agents involved in it as well …

networks form, the impact of network structure on agents' outcomes, and the evolution of networks over time. For this purpose … real-world networks. We also find that there exists a sharp transition in efficiency and network density from highly …In order to understand the different characteristics observed in real-world networks, one needs to analyze how and why …

Pairwise stability (Jackson and Wolinsky, 1996) is the standard stability concept in network formation. It assumes … agents are farsighted, related stability concepts have been proposed. We design a simple network formation experiment to test …

We consider a dynamic model of network formation where agents form and sever links based on the centrality of their … transition from dissortative to assortative networks. This effect can shed light on the distinction between technological and … social networks as it gives a simple mechanism explaining how and why this transition occurs. …

The centrality of an agent in a network has been shown to be crucial in explaining different behaviors and outcomes. In … measure for a given network to its properties for a reduced problem. In our case, the reduced problem only keeps track of …

who are most central in a network according to "diffusion centrality", which nests other standard centrality measures … diffusion central (not just those with many friends). Moreover, these nominees are more central in the network than traditional …