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13 May 2026

Study

LangChain · RAG

Retrieval-augmented generation end to end with LCEL: retrieve chunks from my own notes, stuff them into a grounded prompt, answer with a local model, and return the sources with the answer.

  • RAG = retrieve relevant chunks, put them in the prompt, and tell the model to answer only from them.
  • Returning the retrieved sources alongside the answer makes it checkable.

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