RAG 检索沉底多层机制:同章节措辞差异 + 截断/降权拦截短文本精确答案

Domain: rag · Evidence E2 — Local smoke reproduced
ragretrievalsilent-degradationbm25overlap-guardfanuc

Summary

2026-08-21/22 R-2000iC 换油周期案例:hermes 回答"数值对(碰巧)但来源错位",④ 误判"KB 蒸馏覆盖缺口"——实际 **B-82334CM/05 §7.3 数据完整在库**(3年/11520h + 指定润滑脂 Alvania S2 + 各轴供脂量 8370ml 等),是**检索漏召回**…

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