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This evaluator uses weighted cumulative precision (WCP) which prioritizes the relevance of top-ranked context nodes and rewards correct ordering. This approach is critical because LLMs tend to focus more on earlier context nodes, and incorrect ranking can lead to hallucinations.

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Input

  • Required Inputs:
    • input: The original user query
    • context: List of context chunks retrieved for the response
    • expected_output: The expected response that should be generated

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Output

  • Result: Value in the continuous range [0, 1]
  • Reasoning: Detailed explanation of precision assessment

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Interpretation

  • Higher score (closer to 1): Better precision - relevant context nodes are prioritized at the top of the retrieved context, and most statements in the expected output are justified by these nodes
  • Lower score (closer to 0): Poor precision - relevant context nodes are ranked lower than irrelevant ones, or few statements in the expected output are justified by the retrieved context
Higher scores indicate better precision, meaning the retrieved context contains more relevant information and less irrelevant content for generating the expected output.
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