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分类依据与纠错

AI 根据所提供的论文材料归类:摘要主要讨论随机实验的处理效应估计与推断,并明确覆盖一般网络和组内互动下的实验,支持因果与网络干扰分类。

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代码、数据与补充材料

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关注这篇论文的作者
Susan Athey
Guido Imbens

随机实验的计量经济学方法

研究问题
如何从随机分配产生的不确定性出发分析随机实验,并处理分层、配对、整群分配、不依从、效应异质性及个体间互动?
方法与思路
作者综述随机化推断及其与回归分析的联系,讨论意向处理与工具变量分析,并覆盖异质性探索、最优分配和干扰情形。
材料陈述的贡献
摘要称系统梳理多类随机实验的估计与推断,强调分层的效率收益,并讨论保持置信区间有效性的异质性分析方法。
阅读关注点
全文应核对随机化推断与抽样推断的目标差异、不依从时各估计量的含义,以及网络互动如何改变设计与效应定义。
阅读边界
这是 arXiv 预印本,不能据此认定已同行评审或被期刊接收;摘要属于综述概述,未列出各类设计所需的完整条件。

原文摘要

In this review, we present econometric and statistical methods for analyzing randomized experiments. For basic experiments we stress randomization-based inference as opposed to sampling-based inference. In randomization-based inference, uncertainty in estimates arises naturally from the random assignment of the treatments, rather than from hypothesized sampling from a large population. We show how this perspective relates to regression analyses for randomized experiments. We discuss the analyses of stratified, paired, and clustered randomized experiments, and we stress the general efficiency gains from stratification. We also discuss complications in randomized experiments such as non-compliance. In the presence of non-compliance we contrast intention-to-treat analyses with instrumental variables analyses allowing for general treatment effect heterogeneity. We consider in detail estimation and inference for heterogeneous treatment effects in settings with (possibly many) covariates. These methods allow researchers to explore heterogeneity by identifying subpopulations with different treatment effects while maintaining the ability to construct valid confidence intervals. We also discuss optimal assignment to treatment based on covariates in such settings. Finally, we discuss estimation and inference in experiments in settings with interactions between units, both in general network settings and in settings where the population is partitioned into groups with all interactions contained within these groups.

笔记与分组
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