Causal DAG Summarization (Full Version)

• URL: http://arxiv.org/abs/2504.14937v1
• Date: Mon, 21 Apr 2025 08:01:32 GMT
• Title: Causal DAG Summarization (Full Version)
• Authors: Anna Zeng, Michael Cafarella, Batya Kenig, Markos Markakis, Brit Youngmann, Babak Salimi,
• Abstract summary: Causal inference aids researchers in discovering cause-and-effect relationships, leading to scientific insights.<n>Current methods for general-purpose graph summarization are inadequate for causal DAG summarization.<n>This paper proposes a causal graph summarization objective that balances graph simplification for better understanding while retaining essential causal information for reliable inference.
• Score: 12.231672388216653
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Causal inference aids researchers in discovering cause-and-effect relationships, leading to scientific insights. Accurate causal estimation requires identifying confounding variables to avoid false discoveries. Pearl's causal model uses causal DAGs to identify confounding variables, but incorrect DAGs can lead to unreliable causal conclusions. However, for high dimensional data, the causal DAGs are often complex beyond human verifiability. Graph summarization is a logical next step, but current methods for general-purpose graph summarization are inadequate for causal DAG summarization. This paper addresses these challenges by proposing a causal graph summarization objective that balances graph simplification for better understanding while retaining essential causal information for reliable inference. We develop an efficient greedy algorithm and show that summary causal DAGs can be directly used for inference and are more robust to misspecification of assumptions, enhancing robustness for causal inference. Experimenting with six real-life datasets, we compared our algorithm to three existing solutions, showing its effectiveness in handling high-dimensional data and its ability to generate summary DAGs that ensure both reliable causal inference and robustness against misspecifications.

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