RAG Evaluation: A Complete Guide for 2025
TL;DR
• RAG systems combine retrieval and generation; evaluation must assess both components.
• Retrieval quality hinges on recall, precision, relevance, and timeliness of sources.
• Generation quality requires grounding, faithfulness, clarity, and low hallucination rates.
• Judge reliability improves with mixed methods: LLM-as-a-judge, programmatic checks, and human review.
• Use