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arXiv 1802.06310stat.MEmath.STstat.APstat.TH
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干预条件下因果DAG等价类的刻画与学习

Characterizing and Learning Equivalence Classes of Causal DAGs under Interventions

Karren D. Yang, Abigail Katcoff, Caroline Uhler

摘要:

我们考虑的问题,学习因果DAG的设置中,观察和干预数据。这种情况在生物学中很常见,可以使用化学试剂或基因缺失来干预基因调控网络。Hauser和Bühlmann(2012)先前描述了完美干预下因果DAG的可识别性,这消除了目标变量与其直接原因之间的依赖性。在本文中,我们将这些可识别性结果扩展到一般干预措施,这可能会修改目标变量及其原因之间的依赖关系,而不会消除它们。我们定义和表征的干预马尔可夫等价类,可以确定从一般(不一定完美)的干预实验。我们还提出了第一个可证明一致的算法学习DAG在这种情况下,并评估我们的算法模拟和生物数据集。

英文摘要:

We consider the problem of learning causal DAGs in the setting where both observational and interventional data is available. This setting is common in biology, where gene regulatory networks can be intervened on using chemical reagents or gene deletions. Hauser and Bühlmann (2012) previously characterized the identifiability of causal DAGs under perfect interventions, which eliminate dependencies between targeted variables and their direct causes. In this paper, we extend these identifiability results to general interventions, which may modify the dependencies between targeted variables and their causes without eliminating them. We define and characterize the interventional Markov equivalence class that can be identified from general (not necessarily perfect) intervention experiments. We also propose the first provably consistent algorithm for learning DAGs in this setting and evaluate our algorithm on simulated and biological datasets.

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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