Fact Verification

Purpose

Systematically verify factual claims using evidence retrieval, source evaluation, and logical reasoning.

Key Datasets

• PolitiFact (Jinyan1/PolitiFact): Political statements rated on 6-level truth scale (True, Mostly True, Half True, Mostly False, False, Pants on Fire)
• Climate-FEVER (tdiggelm/climate_fever): Climate claims labeled SUPPORTS/REFUTES/NOT_ENOUGH_INFO with evidence sentences

Protocol

1. Claim decomposition — Break complex claims into atomic verifiable statements
2. Evidence retrieval — Search authoritative sources for each sub-claim
3. Source evaluation — Assess source credibility and potential bias
4. Evidence-claim alignment — Determine if evidence supports, refutes, or is insufficient
5. Verdict synthesis — Aggregate sub-verdicts into overall assessment