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AI 根据所提供的论文材料归类:摘要明确提出结构因果模型、动态混杂下的后门调整和反事实估计,直接对应因果推断。

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正在核对关联版本…

代码、数据与补充材料

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关注这篇论文的作者
Xinwen Liu
Lei Qian
Song Xi Chen
Niansheng Tang

部分函数型动态后门扩散因果模型

研究问题
面对动态未观测混杂、函数型变量和多分辨率数据,如何在时空系统中开展观测、干预及反事实查询?
方法与思路
作者用条件自回归过程描述潜在混杂的时空依赖,以基展开系数表示函数变量,并将后门调整融入扩散生成模型。
材料陈述的贡献
摘要称给出基展开保持因果效应的理论保证与反事实误差界,合成数据和空气污染应用显示优于所比较方法。
阅读关注点
应核对潜在混杂如何被识别、后门调整为何有效,以及基展开截断、动态设定和反事实误差界依赖的条件。
阅读边界
这是 arXiv 预印本,同行评审与期刊接收未核实;摘要未说明完整识别条件,生成模型拟合不能单独保证消除未观测混杂。

原文摘要

Causal inference in spatio-temporal settings is critically hindered by unmeasured confounders with complex spatio-temporal dynamics and the prevalence of multi-resolution data. While diffusion models present a promising avenue for estimating structural causal models, existing approaches are limited by assumptions of causal sufficiency or static confounding, failing to capture the region-specific, temporally dependent nature of real-world latent variables or to directly handle functional variables. We bridge this gap by introducing the Partially Functional Dynamic Backdoor Diffusion-based Causal Model (PFD-BDCM), a unified generative framework designed to simultaneously tackle causal inference with dynamic confounding and functional data. Our approach formalizes a novel structural causal model that captures spatio-temporal dependencies in latent confounders through conditional autoregressive processes, represents functional variables via basis expansion coefficients treated as standard graph nodes, and integrates valid backdoor adjustment into a diffusion-based generative process. We provide theoretical guarantees on the preservation of causal effects under basis expansion and derive error bounds for counterfactual estimates. Experiments on synthetic data and a real-world air pollution case study demonstrate that PFD-BDCM outperforms existing methods across observational, interventional, and counterfactual queries. This work provides a rigorous and practical tool for robust causal inference in complex spatio-temporal systems characterized by non-stationarity and multi-resolution data.

笔记与分组
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