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Close the retrieval loop
Relevance check, groundedness check, stopping condition. The core of Corrective RAG.
Vanilla RAG is one shot: if it retrieved the wrong thing, it cannot recover. What actually raises quality is turning retrieval into a closed loop.
Rendering diagram…
Three checks that close it
- Relevance check. Are the retrieved chunks about the question? If not, search again before generating. This is the core of Corrective RAG.
- Groundedness check. Is every claim in the answer present in the shown context? If not, narrow it or say "I do not know".
- A stopping condition. At most N rounds. Otherwise the loop runs forever and you find out at the end of the month.