Unverified50% confidenceFactExact time
有向无环图（DAG）能通过后门准则精确推导出控制混杂所需的最小变量集
1
Sources
50%
Confidence
Long-term
Relevance
7/8/2026
First Seen
Sources
In Praise of Observational Evidence: When Randomized Controlled Trials Can't Answer Everything
hackernewshackernews7/1/2026
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