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arXiv 2401.02154cs.LGcs.AIcs.CRstat.ME
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从跨孤岛数据中解耦因果效应的估计

Disentangle Estimation of Causal Effects from Cross-Silo Data

University of Electronic Science and Technology of China(电子科技大学);Huazhong University of Science and Technology(华中科技大学);Hong Kong Polytechnic University(香港理工大学);Nuowei Technology(诺威科技);Inner Mongolia Normal University(内蒙古师范大学)

Yuxuan Liu, Haozhao Wang, Shuang Wang, Zhiming He, Wenchao Xu, Jialiang Zhu, Fan Yang

AI总结:

针对跨孤岛私有数据导致局部因果效应估计偏差的问题,提出一种结合共享与私有分支的解耦架构以传输模型参数,并引入全局约束缓解缺失域偏差,在半合成数据集上优于现有基线方法。

摘要:

估计不同事件间的因果效应对药物开发等关键领域至关重要。然而,与事件相关的数据特征可能分布在不同的孤岛中,并在各自方内保持私有,阻碍了它们之间的直接信息交换。这反过来会导致局部因果效应的估计产生偏差,因为其仅依赖于部分协变量的特征。为了应对这一挑战,我们引入了一种创新的解耦架构,旨在通过共享分支和私有分支的结合,促进富含因果机制的模型参数在跨孤岛间的无缝传输。此外,我们将全局约束引入方程,以有效缓解各种缺失域内的偏差,从而提升我们因果效应估计的准确性。在新的半合成数据集上进行的大量实验表明,我们的方法优于最先进的基线方法。

英文摘要:

Estimating causal effects among different events is of great importance to critical fields such as drug development. Nevertheless, the data features associated with events may be distributed across various silos and remain private within respective parties, impeding direct information exchange between them. This, in turn, can result in biased estimations of local causal effects, which rely on the characteristics of only a subset of the covariates. To tackle this challenge, we introduce an innovative disentangle architecture designed to facilitate the seamless cross-silo transmission of model parameters, enriched with causal mechanisms, through a combination of shared and private branches. Besides, we introduce global constraints into the equation to effectively mitigate bias within the various missing domains, thereby elevating the accuracy of our causal effect estimation. Extensive experiments conducted on new semi-synthetic datasets show that our method outperforms state-of-the-art baselines.

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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