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retriever.ipynb		retriever.ipynb

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Retrievers-RetrievalChainsWithLangchain

1. Ingested the data(Attention is all you need PDF) using PyPDFLoader.

2. Split it into chunks using langchain text splitters.

3. Used OpenAIEmbeddings for vector embeddings.

4. Used FAISS DB to store those vectors.

5. Created a document chain using langchain's create_stuff_documents_chain.

6. Created retriever on top of the FAISS database.

7. Finally created retrieval chain & invoked it with a query.