Factual oracle verification

How it works

Where a reliable oracle exists (a database, a known-answer set, a citation index), every factual claim can be verified against it. This is the most direct test for hallucination and fabricated references, and underpins automated fact-checking pipelines.

When to use it

Factual QA, summarization fidelity, citation generation, retrieval grounding.

Limitations

Requires a trustworthy oracle, which often doesn't exist for open-ended tasks.

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