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arXiv 1906.10258econ.EMcs.SIstat.MEstat.ML
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网络干扰下的政策靶向

Policy Targeting under Network Interference

Davide Viviano

AI总结:

本文针对网络溢出下的处理配置,提出基于半参数福利估计与混合整数线性规划的靶向方法,并给出遗憾保证,无需目标网络信息或正确结构模型。

摘要:

本文利用来自(准)实验的信息,研究存在溢出效应时的最优处理配置问题。我提出了一种在溢出发生时最大化平均社会福利之样本类比量的方法。我在倾向评分为已知和未知两种情形下构造了半参数福利估计量,并将优化问题转化为一个混合整数线性规划,该规划可使用现成算法求解。我推导出关于遗憾(regret)的一组强保证,遗憾即最大可达到福利与在估计政策下评估所得福利之间的差额。所提方法在应用中具有颇具吸引力的特性:(i)不需要目标总体的网络信息;(ii)利用处理效应中的异质性来对个体进行靶向;(iii)不依赖于对某一特定结构模型的正确设定;(iv)能够容纳对政策函数施加的约束。一项在社交网络上靶向信息的应用阐明了该方法的优势。

英文摘要:

This paper studies the problem of optimally allocating treatments in the presence of spillover effects, using information from a (quasi-)experiment. I introduce a method that maximizes the sample analog of average social welfare when spillovers occur. I construct semi-parametric welfare estimators with known and unknown propensity scores and cast the optimization problem into a mixed-integer linear program, which can be solved using off-the-shelf algorithms. I derive a strong set of guarantees on regret, i.e., the difference between the maximum attainable welfare and the welfare evaluated at the estimated policy. The proposed method presents attractive features for applications: (i) it does not require network information of the target population; (ii) it exploits heterogeneity in treatment effects for targeting individuals; (iii) it does not rely on the correct specification of a particular structural model; and (iv) it accommodates constraints on the policy function. An application for targeting information on social networks illustrates the advantages of the method.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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