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arXiv 2007.08812cs.LGcs.AIstat.ME
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基于原因和机制独立性的潜在工具变量先验因果推理

Latent Instrumental Variables as Priors in Causal Inference based on Independence of Cause and Mechanism

Sorbonne University(索邦大学)

Nataliya Sokolovska, Pierre-Henri Wuillemin

摘要:

基于条件独立的因果推理方法构造马尔可夫等价图,不能应用于二元情况。相反,基于原因和机制独立性的方法则认为因果发现可以从两个观测结果中推断出来。在我们的贡献,我们挑战调和这两个研究方向。我们研究了潜在的变量,如潜在的工具变量和隐藏的共同原因的因果图形结构中的作用。我们发现,基于原因和机制的独立性的方法,间接包含的痕迹存在的隐藏的工具变量。我们推导出一种新的算法来推断两个变量之间的因果关系,我们验证了模拟数据和基准的因果对所提出的方法。我们说明我们的实验,所提出的方法是简单的和极具竞争力的经验准确性相比,国家的最先进的方法。

英文摘要:

Causal inference methods based on conditional independence construct Markov equivalent graphs, and cannot be applied to bivariate cases. The approaches based on independence of cause and mechanism state, on the contrary, that causal discovery can be inferred for two observations. In our contribution, we challenge to reconcile these two research directions. We study the role of latent variables such as latent instrumental variables and hidden common causes in the causal graphical structures. We show that the methods based on the independence of cause and mechanism, indirectly contain traces of the existence of the hidden instrumental variables. We derive a novel algorithm to infer causal relationships between two variables, and we validate the proposed method on simulated data and on a benchmark of cause-effect pairs. We illustrate by our experiments that the proposed approach is simple and extremely competitive in terms of empirical accuracy compared to the state-of-the-art methods.

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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