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来源类型Working Paper
规范类型报告
DOI10.3386/w27557
来源IDWorking Paper 27557
A Graphical Lasso Approach to Estimating Network Connections: The Case of U.S. Lawmakers
Marco Battaglini; Forrest W. Crawford; Eleonora Patacchini; Sida Peng
发表日期2020-07-20
出版年2020
语种英语
摘要In this paper, we propose a new approach to the estimation of social networks and we apply it to the estimation of productivity spillovers in the U.S. Congress. Social networks such as the social connections among lawmakers are not generally directly observed, they can be recovered only using the observable outcomes that they contribute to determine (such as, for example, the legislators’ effectiveness). Moreover, they are typically stable for relatively short periods of time, thus generating only short panels of observations. Our estimator has three appealing properties that allows it to work in these environments. First, it is constructed for “small” asymptotic, thus requiring only short panels of observations. Second, it requires relatively nonrestrictive sparsity assumptions for identification, thus being applicable to dense networks with (potentially) star shaped connections. Third, it allows for heterogeneous common shocks across subnetworks. The application to the U.S. Congress gives us new insights about the nature of social interactions among lawmakers. We estimate a significant decrease over time in the importance of productivity spillovers among individual lawmakers, compensated by an increase in the party level common shock over time. This suggests that the rise of partisanship is not affecting only the ideological position of legislators when they vote, but more generally how lawmakers collaborate in the U.S. Congress.
主题Microeconomics ; Welfare and Collective Choice ; Economics of Information
URLhttps://www.nber.org/papers/w27557
来源智库National Bureau of Economic Research (United States)
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条目标识符http://119.78.100.153/handle/2XGU8XDN/585230
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Marco Battaglini,Forrest W. Crawford,Eleonora Patacchini,et al. A Graphical Lasso Approach to Estimating Network Connections: The Case of U.S. Lawmakers. 2020.
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