No. 734 - Networks with decreasing returns to linking

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by Filippo Vergara CaffarelliNovember 2009

This paper presents a model of non-cooperative network formation in which the marginal benefit of new links eventually decreases. Agents link with each other to gain information and update their links according to better-reply dynamics. In the long run the system settles to a unique network architecture that consists of a constellation of starred wheels. This is reminiscent of some real-world features. Collections of smaller disjoint networks connecting only a few agents are more common than global networks connecting all the agents in a community. Differences within a connected component such as the centre and the periphery are established.

Published in 2017 in: Dynamic Games and Applications, v. 7, 2, pp. 323-345

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