论文标题
在偏好或会议上同质？识别和估计迭代网络形成模型
Homophily in preferences or meetings? Identifying and estimating an iterative network formation model
论文作者
论文摘要
在社会和经济网络中同质的同性恋是由同质性（偏好）的品味驱动的，还是遇到具有相似属性（机会）的个人的可能性更高？本文研究了区分这两种机制的迭代网络游戏的识别和估计。我们的方法使我们能够评估改变代理之间的会议协议的反事实效应。作为应用程序，我们研究了在巴西塑造课堂友谊网络中偏好和会议的作用。在一个网络结构中，由于偏好的同质性偏好而质量要比同质性的机会强，因此跟踪学生可能会提高福利。尽管如此，该政策的相对利益在整个学年都降低了。
Is homophily in social and economic networks driven by a taste for homogeneity (preferences) or by a higher probability of meeting individuals with similar attributes (opportunity)? This paper studies identification and estimation of an iterative network game that distinguishes between these two mechanisms. Our approach enables us to assess the counterfactual effects of changing the meeting protocol between agents. As an application, we study the role of preferences and meetings in shaping classroom friendship networks in Brazil. In a network structure in which homophily due to preferences is stronger than homophily due to meeting opportunities, tracking students may improve welfare. Still, the relative benefit of this policy diminishes over the school year.
