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Learn to build an AI-powered retrieval-based question-answering (QA) system. using LangChain, Groq API, LlamaParse, and Qdrant

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How to Build an Advanced RAG System using LangChain

Overview

  • Learn to build an AI-powered retrieval-based question-answering (QA) system.
  • Uses LangChain, Groq API, LlamaParse, and Qdrant for document processing and retrieval.
  • Queries Meta’s Q1 2024 Earnings Report to extract relevant financial information.

Prerequisites

  • Install required libraries using pip.
  • Libraries include LangChain, Qdrant, LlamaParse, FastEmbed, Flashrank, Unstructured[md].

Steps in the Tutorial

Set Up Environment Variables

  • Configure Groq API Key for interacting with the language model.

Import Required Modules

  • Load necessary LangChain, Qdrant, LlamaParse, FastEmbed, Flashrank modules.

Download and Parse the Financial Report

  • Retrieve Meta’s Q1 2024 earnings report via gdown.
  • Use LlamaParse to extract key financial data and save as Markdown.

Split and Embed Documents

  • Load the extracted document using UnstructuredMarkdownLoader.
  • Split into smaller chunks (2048 chars) using RecursiveCharacterTextSplitter.
  • Generate embeddings with FastEmbed (BAAI/bge-base-en-v1.5).
  • Store embeddings in Qdrant for efficient search.

Perform Similarity Search

  • Query the document using Qdrant’s similarity search.
  • Retrieve relevant sections with retriever (k=5).

Apply Contextual Compression

  • Use Flashrank to rerank retrieved documents based on relevance.
  • Improve accuracy by filtering out irrelevant results.

Build Retrieval-Based Q&A System

  • Use LangChain’s RetrievalQA to generate answers.
  • Integrate ChatGroq to respond with AI-generated insights.

Outcome

  • A fully functional AI agent capable of answering financial queries from Meta’s report.
  • Optimized retrieval using embedding, ranking, and contextual compression.
  • Hands-on experience with LangChain, vector databases, and AI retrieval models.

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Learn to build an AI-powered retrieval-based question-answering (QA) system. using LangChain, Groq API, LlamaParse, and Qdrant

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