We present a strategic network formation model based on membership in clubs. Individuals choose affiliations. The set of all memberships induces a weighted network where two individuals are directly connected if they share a club. Two individuals may also be indirectly connected using multiple memberships of third parties. Individuals gain from their position in the induced network and pay membership fees. We study the club congestion model where the weight of a link decreases with the size of the smallest shared club. A trade-off emerges between the size of clubs, the depreciation of indirect connections, and the membership fee. (JEL D71, D85, Z13)

中文翻译：

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社交俱乐部和社交网络

我们提出了一个基于俱乐部会员的战略网络形成模型。个人选择隶属关系。所有成员的集合形成一个加权网络，如果两个人共享一个俱乐部，则他们直接连接。两个人也可以通过第三方的多个成员资格间接连接。个人从他们在诱导网络中的位置中获益并支付会员费。我们研究了俱乐部拥塞模型，其中链接的权重随着最小共享俱乐部的大小而减小。在俱乐部的规模、间接联系的贬值和会员费之间出现了权衡。(JEL D71, D85, Z13)