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RAG: Attach Retrieval to Generation, but Do Not Treat 2020 RAG as a Production RAG Platform

Intermediate Retrieval, memory, and production RAG

RAG deep reading: Part 1 , Note: Aug 27, 2026 , Paper: 2020 , NLP

A source-grounded reading of Lewis et al., NeurIPS 2020: BART is paired with a dense retriever over Wikipedia, and RAG-Sequence / RAG-Token condition generation on retrieved passages. RAG-Seq reaches 44.5 Exact Match on NQ; this is a 2020 method paper, not a 2025 production RAG platform and not an agent loop.

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