Elevating Large Language Models to New Levels of Relevance and Accuracy

Implement Retrieval-Augmented Generation(RAG) with LangChain to Enhance Large Language Models(LLMs) to New Levels of Relevance and Factual Correctness

Renu Khandelwal
6 min readNov 9, 2023

Discover RAG fundamentals with clarity and simplicity, free from technical intricacies here.

This blog post will walk you through how to implement Retrieval-Augmented Generation (RAG) using LangChain and Python.

RAG is a powerful technique that combines the strengths of large language models (LLMs) with external data sources to generate more comprehensive, context-aware, and accurate responses.

In this post, we will implement RAG to answer questions about a PDF file. We will start by reading and processing the PDF’s contents, chunking the large PDF content, and storing the embeddings in a vector database like FAISS or Pinecone. Finally, we will pose a question related to the PDF to the OpenAI LLM and receive a response that utilizes RAG to provide relevant and factual information.

Image by the author(inspired by Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks)

Preparation of External Sources of Information and Storing Indexes in Vector Database

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Renu Khandelwal
Renu Khandelwal

Written by Renu Khandelwal

A Technology Enthusiast who constantly seeks out new challenges by exploring cutting-edge technologies to make the world a better place!

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