What is the difference between context precision and context recall in RAGAS?

Context precision measures the proportion of retrieved chunks that are actually relevant to the query, indicating whether the retriever returns useful results or drowns the generator in noise. Context recall measures whether all necessary information for the ground-truth answer is present in the retrieved chunks, requiring reference answers to compute. Precision tells you if you retrieved too much irrelevant content, and recall tells you if you retrieved too little relevant content. Both must be high for RAG to work well.