Retrieval Is Not a Safety Boundary: Poisoned-Corpus and Unsupported-Question Evaluation of a RAG Pipeline
Abstract. I built a retrieval-augmented generation service with hybrid retrieval (dense + BM25), a relevance threshold that is supposed to make it refuse unanswerable questions, and an extractive generator that quotes retrieved text with citations. I tested the two failure surfaces the standard eva…
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- 2026-11-03 04:37 · DEV Community — Machine Learning
Retrieval Is Not a Safety Boundary: Poisoned-Corpus and Unsupported-Question Evaluation of a RAG Pipeline