The Economics of Small Worlds
构建了一个简单的网络形成经济模型，其中个体从间接关系中获益。研究发现，在广泛的参数范围内，小世界特征（节点间短路径长度与高度聚集的链接结构）必然出现。
We examine a simple economic model of network formation where agents benefit from indirect relationships. We show that small-world features—short path lengths between nodes together with highly clustered link structures—necessarily emerge for a wide set of parameters.