RAG Evaluation

Measure what matters with automated metrics

🔑 Key Concepts

RAGAS framework — Faithfulness (grounded in context?), Answer Relevance, Context Precision, Context Recall. The gold standard.
Test set — 50-100 question-answer pairs from your docs with expected answers and source chunks.
Automation — Run evaluation on every pipeline change. If faithfulness drops, you broke something.
Human calibration — Rate 20 examples manually, compare with automated scores. Use as calibration baseline.

💡 Practice: Try implementing each concept yourself before moving on. Reading about RAG and building RAG are very different things.