WRSWorld Research StateContribute
WORLD RESEARCH STATE

FActScore: Fine-grained Atomic Evaluation of Factual Precision in Long Form Text Generation

Contribution grade

LLM factuality and grounded generation · Evaluation resource design

Reference score145,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Defines source-relative factual precision by decomposing long-form responses into atomic facts and estimates supported fractions with retrieval and language-model checking.

Scientific scope

Defines source-relative factual precision by decomposing long-form responses into atomic facts and estimates supported fractions with retrieval and language-model checking. Measures precision conditional on responding, not recall, completeness or absolute truth. Assumes sufficiently consistent/covering knowledge sources and clear support judgments; decomposition, retrieval and judges may err. Person-biography evaluation is not biology.

Evidence

The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. Measures precision conditional on responding, not recall, completeness or absolute truth. Assumes sufficiently consistent/covering knowledge sources and clear support judgments; decomposition, retrieval and judges may err. Person-biography evaluation is not biology.

Contributors

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

Full scientific record · Browse contribution grades · Request a correction