Unverified50% confidenceFactExact time
The core metric of mainstream faithfulness rewards is the 'proportion of supported sentences', that is, if each sentence in the answer can find support in the retrieved passages it counts as supported, and the higher the proportion the higher the reward.
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50%
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Long-term
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10/14/2026
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Related Claims
UnverifiedMany reward models assign higher scores to longer responses (even when quality is not necessarily higher) and also tend to score highly responses that are fluent in phrasing but repetitive in content.71% similarUnverifiedHuman annotators exhibit a cognitive bias toward more information being better when evaluating answers, causing reward models to implicitly link length with quality, which is one of the causes of model verbosity.70% similarUnverified根据待评内容类型通过语义相似度检索动态选择最相关的锚定样本，在实践中可将裁判-人工一致性提升5-15个百分点70% similarUnverifiedAnswer accuracy and retrieval faithfulness are two mutually independent evaluation dimensions; faithfulness evaluation requires verifying whether each key claim in the answer can be directly traced back to the retrieved documents.69% similar
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