Also known as: UCR · Unsupported claim Rate
UCR (unsupported-claim rate) — это процент утверждений в ответе модели, которые не grounded в подтверждающих evidence. Высокий UCR указывает, что система может производить слишком много unsupported или hallucinated assertions.
The percentage of claims in a response that aren't grounded. For example, if an LLM's response makes 10 claims but only 1 is grounded, the UCR is 90%. A high UCR implies that an LLM is hallucinating too frequently. See also citation precision and citation recall.