arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.02891cs.AIcs.CCcs.LGcs.LOstat.ME
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基于易处理电路的因果推理

Causal Inference Using Tractable Circuits

University of California, Los Angeles(加州大学洛杉矶分校)

Adnan Darwiche

摘要:

本文的目的是讨论最近的一个结果表明,概率推理(未知)的因果机制的存在下,传统上被视为棘手的模型可以是易处理的。这一结果最近被报道,以促进基于模型的监督学习,但它可以解释在因果关系的上下文中如下。人们可以将非参数因果图编译成算术电路,该算术电路支持在电路大小中时间线性的推断。该电路也是非参数的,因此它可以用于从数据中估计参数,并进一步推理(在线性时间内)由这些估计参数化的因果图。此外,电路的大小有时可以是有界的,甚至当因果图的树宽不是,导致在模型上的易处理的推理,以前被认为是棘手的。这已经通过一种新技术实现,该技术可以在计算上利用因果机制,但不需要知道它们的身份(因果推理中的经典设置)。我们的目标是提供一个以因果关系为导向的暴露这些新的结果,并推测它们如何可能有助于更可扩展和通用的因果推理。

英文摘要:

The aim of this paper is to discuss a recent result which shows that probabilistic inference in the presence of (unknown) causal mechanisms can be tractable for models that have traditionally been viewed as intractable. This result was reported recently to facilitate model-based supervised learning but it can be interpreted in a causality context as follows. One can compile a non-parametric causal graph into an arithmetic circuit that supports inference in time linear in the circuit size. The circuit is also non-parametric so it can be used to estimate parameters from data and to further reason (in linear time) about the causal graph parametrized by these estimates. Moreover, the circuit size can sometimes be bounded even when the treewidth of the causal graph is not, leading to tractable inference on models that have been deemed intractable previously. This has been enabled by a new technique that can exploit causal mechanisms computationally but without needing to know their identities (the classical setup in causal inference). Our goal is to provide a causality-oriented exposure to these new results and to speculate on how they may potentially contribute to more scalable and versatile causal inference.

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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