Welcome to your interview.
The question is on your right: Evaluate RAG Retrieval and Answers. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
You are evaluating an LLM application that uses retrieval before generation, and the team wants a clean way to measure whether poor user outcomes come from bad retrieval, weak answer generation, or unsupported claims. You need an evaluation framework that separates these failure modes clearly enough to guide iteration.
What metrics would you use to measure retrieval quality, answer quality, and hallucination in an LLM application?