RAG's core mechanisms, including iterative retrieval and answer verification, already appeared in early 2000s TREC question-answering systems, so LLMs should be seen as a new interface over an old architecture.
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Forgotten History or Test-of-Time? Retrospect and Prospect on RAG from an IR Perspective
RAG's core mechanisms, including iterative retrieval and answer verification, already appeared in early 2000s TREC question-answering systems, so LLMs should be seen as a new interface over an old architecture.