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Kernel Single Proxy Control for Deterministic Confounding
Feb. 21, 2024, 5:43 a.m. | Liyuan Xu, Arthur Gretton
cs.LG updates on arXiv.org arxiv.org
Abstract: We consider the problem of causal effect estimation with an unobserved confounder, where we observe a proxy variable that is associated with the confounder. Although Proxy causal learning (PCL) uses two proxy variables to recover the true causal effect, we show that a single proxy variable is sufficient for causal estimation if the outcome is generated deterministically, generalizing Control Outcome Calibration Approach (COCA). We propose two kernel-based methods for this setting: the first based on …
abstract arxiv confounding control cs.lg kernel observe show stat.ml true type variables
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