隐性因果假设的前后检查
1Department of Statistics and Data Science, University of Texas at Austin, Austin, Texas, USA.
Biometrics
|June 16, 2023
概括
在因果推理中的贝叶斯方法可以无意中忽略混. 本研究引入了检查和纠正先前偏见的工具,确保可靠的因果关系效应不确定性量化.
科学领域:
- 因果推理因果推理
- 机器学习 机器学习
- 贝叶斯统计学贝叶斯统计学
背景情况:
- 机器学习和贝叶斯非参数越来越多地用于因果效应不确定性量化.
- 高维贝叶斯模型可能无意中编码了先前的信息,从而降低了混.
研究的目的:
- 识别和解决贝叶斯因果推理中先前分布的问题,无意地将混最小化.
- 在混的背景下,提供用于验证前后分布的工具.
主要方法:
- 开发方法来验证先前分布是否表现出对混杂模型的诱导偏差.
- 评估后部分布是否包含足够的信息来克服潜在的先前偏差.
- 在模拟的高维探针回归数据上进行概念验证.
- 使用贝叶斯非参数决策树组合在医疗支出调查数据上的插图.
主要成果:
- 展示了高维贝叶斯模型中的规范化如何可能意味着可以忽略不计的混.
- 提供实用工具来诊断和减轻因果推理中先前诱导的偏见.
- 展示了拟议方法在模拟和现实数据上的实用性.
结论:
- 贝叶斯非参数方法提供了灵活性,但需要在因果推理中仔细预先规范.
- 开发的工具帮助从业人员确保因果关系不确定性量化的有效性.
- 解决先前的偏见对于在高维环境中可靠的因果效应估计至关重要.
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