Causal Leave-One-Out Probes for RAG Context Allocation
August 23, 2026
This research identifies a diagnostic illusion in RAG where standard relevance proxies fail on hard negatives. The authors propose a causal leave-one-out probe to isolate generative reliance and demonstrate that iterative compute allocation outperforms monolithic context widening.
HOW THIS AFFECTS YOU
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builderYou can optimize retrieval performance by moving away from simple context expansion toward iterative allocation.
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researcherYou can use causal probes to formally calibrate structural dilution of LLM attention in RAG systems.