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如何安装和使用Ragas进行RAG系统评估?

2025-09-10 1.8 K

Ragas提供了两种安装方式:

  • Installation via PyPI: Implementationpip install ragas
  • Installation from source: Runpip install git+https://github.com/explodinggradients/ragas

基本使用流程分为三步:

  1. Import Module:需要导入评估指标和样本类
    • from ragas import SingleTurnSample
    • from ragas.metrics import AspectCritic
  2. Preparing test data:包含用户输入和系统响应的字典
  3. Setting up the Evaluator:基于LLM构建评估器实例

评估过程示例:

  1. 配置GPT-4等LLM作为评估器
  2. 定义具体的评估指标(如摘要准确性)
  3. pass (a bill or inspection etc)single_turn_ascore方法执行评估

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