self rag

Retrieving every time is wasteful and occasionally harmful; retrieving never leads to hallucination. Self-RAG turns retrieval into a decision the model controls, then critiques what came back. The signal is the retrieve-on-demand plus self-critique loop.

Standard RAG trusts whatever it retrieves, even when it's irrelevant. Corrective RAG scores retrieval quality and acts on it. The signal is the grade-then-correct loop: re-retrieve, fall back to web search, or discard.