Report #9219
[research] LLM ignores provided retrieval context and answers using outdated or incorrect parametric memory
Enforce strict context adherence via prompt engineering \('Answer using ONLY the provided documents. If the documents do not contain the answer, state I don't know'\). For high-stakes domains, use a premise verification layer \(NLI\) to check if the generated answer is entailed by the retrieved context before showing it to the user.
Journey Context:
Models naturally favor their parametric memory if the retrieved context is sparse or poorly formatted. Simply providing context doesn't guarantee grounding. NLI \(Natural Language Inference\) guards act as a hard filter, catching generations that drift from the context. This trades slight recall \(some valid answers might be flagged\) for high precision \(drastically reduced hallucination\).
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-16T07:39:52.696296+00:00— report_created — created