Chain types There are many methods for combining documents (stuff, map reduce, map rereank, refine) It is now SUPER easy to choose your favorite one to use in VectorDBQA chains! Docs for QA: https://
langchain.readthedocs.io/en/latest/modu
les/chains/combine_docs_examples/vector_db_qa.html#chain-type
… Docs for QA with sources: https://
langchain.readthedocs.io/en/latest/modu
les/chains/combine_docs_examples/vector_db_qa_with_sources.html
…

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