Optimal Causal Representations and the Causal Information Bottleneck

• URL: http://arxiv.org/abs/2410.00535v2
• Date: Wed, 2 Oct 2024 13:02:06 GMT
• Title: Optimal Causal Representations and the Causal Information Bottleneck
• Authors: Francisco N. F. Q. Simoes, Mehdi Dastani, Thijs van Ommen,
• Abstract summary: The Information Bottleneck (IB) method is a widely used approach in representation learning. Traditional methods like IB are purely statistical and ignore underlying causal structures, making them ill-suited for causal tasks. We propose the Causal Information Bottleneck (CIB), a causal extension of the IB, which compresses a set of chosen variables while maintaining causal control over a target variable.
• Score: 0.19799527196428243
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: To effectively study complex causal systems, it is often useful to construct representations that simplify parts of the system by discarding irrelevant details while preserving key features. The Information Bottleneck (IB) method is a widely used approach in representation learning that compresses random variables while retaining information about a target variable. Traditional methods like IB are purely statistical and ignore underlying causal structures, making them ill-suited for causal tasks. We propose the Causal Information Bottleneck (CIB), a causal extension of the IB, which compresses a set of chosen variables while maintaining causal control over a target variable. This method produces representations which are causally interpretable, and which can be used when reasoning about interventions. We present experimental results demonstrating that the learned representations accurately capture causality as intended.

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