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分类依据与纠错

AI 根据所提供的论文材料归类:摘要直接讨论网络干扰、暴露映射有效性及直接处理效应的识别。

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正在核对关联版本…

代码、数据与补充材料

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关注这篇论文的作者
Martin Huber
Jannis Kueck
Mara Mattes

利用图卷积自编码器学习并检验干扰的暴露映射

研究问题
当个体结果同时受自身和网络联系人处理影响时,如何学习复杂暴露映射,并检验预设映射能否充分描述干扰?
方法与思路
作者使用图卷积自编码器学习暴露映射,再将其作为检验工具,依据给定预设映射后的条件独立性检验映射有效性。
材料陈述的贡献
摘要将机器学习暴露映射有效性检验列为主要贡献,用于考察直接效应的识别,并通过模拟评估有限样本表现。
阅读关注点
应核对条件独立结论所需的处理分配和结果模型条件、学习与检验样本的关系,以及检验尺寸、功效和识别含义。
阅读边界
这是 arXiv 预印本,同行评审或期刊接收未经核实;摘要未说明完整识别条件,不能将未拒绝解释为映射已被证实。

原文摘要

Interference or spillover effects arise when an individual's outcome (e.g., health) is influenced not only by their own treatment (e.g., vaccination) but also by the treatment of others, creating challenges for evaluating treatment effects. Exposure mappings provide a framework to study such interference by explicitly modeling how the treatment statuses of contacts within an individual's network affect their outcome. Most existing research relies on a priori exposure mappings of limited complexity, which may fail to capture the full range of interference effects. In contrast, this study applies a graph convolutional autoencoder to learn exposure mappings in a data-driven way, which exploit dependencies and relations within a network to more accurately capture interference effects. As our main contribution, we introduce a machine learning-based test for the validity of exposure mappings and thus test the identification of the direct effect. In this testing approach, the learned exposure mapping is used as an instrument to test the validity of a simple, user-defined exposure mapping. The test leverages the fact that, if the user-defined exposure mapping is valid (so that all interference operates through it), then the learned exposure mapping is statistically independent of any individual's outcome, conditional on the user-defined exposure mapping. We assess the finite-sample performance of this proposed validity test through a simulation study.

笔记与分组