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arXiv 2301.12985stat.MLcs.LGstat.AP
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将地球观测数据整合到因果推断中:挑战与机遇

Integrating Earth Observation Data into Causal Inference: Challenges and Opportunities

University of Texas at Austin(德克萨斯大学奥斯汀分校);Chalmers University of Technology(查尔姆斯理工大学);Linköping University(林雪平大学)

Connor T. Jerzak, Fredrik Johansson, Adel Daoud

摘要:

观察性研究需要调整与治疗和结局相关的混杂因素。在观察到的变量是表格中的数量,如在一个街区的平均收入的设置,工具已经开发解决这种混淆。然而,在发展中世界的许多地方,有关当地社区的专题可能很少。在这方面,卫星图像可以发挥重要作用,作为否则无法观测到的混淆变量的代理。在本文中,我们研究了在这种非表格设置,在卫星图像中发现的模式或对象的混杂偏差的混杂调整。使用在非洲的反贫困援助计划的评估作为我们运行的例子,我们正式执行因果调整与这种非结构化的数据的挑战-什么条件是足以确定因果关系的影响,如何进行估计,以及如何量化的方式,其中某些方面的非结构化图像对象是最预测的治疗决策。通过模拟,我们还探讨了基于卫星图像的观测推断的灵敏度图像分辨率和误指定的图像相关的混淆。最后,我们将这些工具应用于从卫星图像中估计非洲社区反贫困干预措施的效果。

英文摘要:

Observational studies require adjustment for confounding factors that are correlated with both the treatment and outcome. In the setting where the observed variables are tabular quantities such as average income in a neighborhood, tools have been developed for addressing such confounding. However, in many parts of the developing world, features about local communities may be scarce. In this context, satellite imagery can play an important role, serving as a proxy for the confounding variables otherwise unobserved. In this paper, we study confounder adjustment in this non-tabular setting, where patterns or objects found in satellite images contribute to the confounder bias. Using the evaluation of anti-poverty aid programs in Africa as our running example, we formalize the challenge of performing causal adjustment with such unstructured data -- what conditions are sufficient to identify causal effects, how to perform estimation, and how to quantify the ways in which certain aspects of the unstructured image object are most predictive of the treatment decision. Via simulation, we also explore the sensitivity of satellite image-based observational inference to image resolution and to misspecification of the image-associated confounder. Finally, we apply these tools in estimating the effect of anti-poverty interventions in African communities from satellite imagery.

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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