Assortative matching with network spillovers

Abstract

This paper investigates endogenous network formation by heterogeneous agents. The agents' types determine the value of linking and we incorporate spillovers as utility from indirect connections. We provide sufficient conditions for a class of networks with sorting to be stable for low to moderate spillovers; with only two types these networks are the unique pairwise stable ones. We also show that this sorting is suboptimal for moderate to high spillovers despite otherwise obeying the conditions for sorting in Becker (1973). This shows that in our sorted networks a tension between stability and efficiency is present. We analyze a policy tool to mitigate suboptimal sorting.

Assortative Matching of Tourists and Destinations: Agents or Algorithms?

“…Rankings may be based on parameters that are invisible, unquantified, uncertain, or weighted and aggregated differentially by different members [18]. Information and transactions may be subject to costs, uncertainties, deceptions, unavailability, or overload [19][20][21][22]. Matching may be constrained by: distance in time or space; legal, cultural, or political barriers; or unequal size or power [7].…”