An Interventionist Approach to Mediation Analysis
An Interventionist Approach to Mediation Analysis
复制标题
中介分析的干预主义方法
DOI:
10.1145/3501714.3501754
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
I. Shpitser
中科院分区:
文献类型:
--
作者:
J. Robins;T. Richardson;I. Shpitser
Judea Pearl's insight that, when errors are assumed independent, the Pure (aka Natural) Direct Effect (PDE) is non-parametrically identified via the Mediation Formula was `path-breaking' in more than one sense! In the same paper Pearl described a thought-experiment as a way to motivate the PDE. Analysis of this experiment led Robins \& Richardson to a novel way of conceptualizing direct effects in terms of interventions on an expanded graph in which treatment is decomposed into multiple separable components. We further develop this novel theory here, showing that it provides a self-contained framework for discussing mediation without reference to cross-world (nested) counterfactuals or interventions on the mediator. The theory preserves the dictum `no causation without manipulation' and makes questions of mediation empirically testable in future Randomized Controlled Trials. Even so, we prove the interventionist and nested counterfactual approaches remain tightly coupled under a Non-Parametric Structural Equation Model except in the presence of a `recanting witness.' In fact, our analysis also leads to a simple sound and complete algorithm for determining identification in the (non-interventionist) theory of path-specific counterfactuals.
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DOI:
--
发表时间:
2019
期刊:
Proceedings of machine learning research
影响因子:
--
作者:
Malinsky,Daniel;Shpitser,Ilya;Richardson,Thomas
通讯作者:
Richardson,Thomas
DOI:
--
发表时间:
2018
期刊:
Uncertainty in artificial intelligence : proceedings of the ... conference. Conference on Uncertainty in Artificial Intelligence
影响因子:
--
作者:
Shpitser,Ilya;Sherman,Eli
通讯作者:
Sherman,Eli
影响因子:
1.4
作者:
Pearl, Judea
通讯作者:
Pearl, Judea
DOI:
--
发表时间:
2018
期刊:
Uncertainty in artificial intelligence : proceedings of the ... conference. Conference on Uncertainty in Artificial Intelligence
影响因子:
--
作者:
Nabi,Razieh;Kanki,Phyllis;Shpitser,Ilya
通讯作者:
Shpitser,Ilya