KB / Memory / tech-rag-toc-pollution
RAG: TOC docs pollute retrieval
Table-of-contents pages rank well but answer poorly — filter or downweight
TOC/index pages often dominate vector search without answering the question.
Mitigate: exclude TOCs, chunk body-only, or metadata filters. Related: tech-rag-citation-guards, tech-rag-metadata-key-drift.