【系统学AI】15 RAG评测体系:RAGAS四维+TruLens+ARES全套方案title: “RAG评测体系(2026版):RAGAS四维+TruLens+ARES全套方案” excerpt: “Faithfulness/Answer Relevancy/Context Precision/Context Recall四维评测+LLM-as-Judge最佳实践+持续监控+A/B测试” cover: rag-evaluation-cover.png tags: RAG评测, RAGAS, TruLens, ARES, LLM-as-Judge, 评测框架