Your question is Vector vs Keyword Retrieval Trade-offs. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What are the primary trade-offs between using vector search versus keyword-based search in a retrieval system?
Discuss differences in semantic matching, exact-term matching, indexing and query cost, latency, interpretability, multilingual behavior, and failure modes. Explain when you would choose vector search, keyword search, or a hybrid approach for a RAG system, and describe how you would evaluate the decision.
