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Main Author: Bartels, Christian
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2605.17050
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author Bartels, Christian
author_facet Bartels, Christian
contents Causal inference seeks to estimate the effect of an intervention on an outcome using observed data, typically via Rubin's potential-outcome framework or Pearl's do-calculus. Following section 9 of Richardson and Robins (2013), this essay treats single-world intervention graphs (SWIGs) as representations of both the observed-data distribution and the interventional distribution, rather than as a bridge to potential outcomes. We demonstrate that this perspective provides a systematic way to derive identifying expressions for estimands defined by interventions on selected variables. Back-door derivations mirror those in existing literature, while front-door derivations offer a distinct pathway that extends more readily to complex settings. Conceptually, the method is simultaneously related to and distinct from Rubin's framework and Pearl's calculus.
format Preprint
id arxiv_https___arxiv_org_abs_2605_17050
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Single World Intervention Graphs as Distributions: A Framework for Causal Identification
Bartels, Christian
Methodology
62D20
Causal inference seeks to estimate the effect of an intervention on an outcome using observed data, typically via Rubin's potential-outcome framework or Pearl's do-calculus. Following section 9 of Richardson and Robins (2013), this essay treats single-world intervention graphs (SWIGs) as representations of both the observed-data distribution and the interventional distribution, rather than as a bridge to potential outcomes. We demonstrate that this perspective provides a systematic way to derive identifying expressions for estimands defined by interventions on selected variables. Back-door derivations mirror those in existing literature, while front-door derivations offer a distinct pathway that extends more readily to complex settings. Conceptually, the method is simultaneously related to and distinct from Rubin's framework and Pearl's calculus.
title Single World Intervention Graphs as Distributions: A Framework for Causal Identification
topic Methodology
62D20
url https://arxiv.org/abs/2605.17050