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Unlocking Data with Generative AI and RAG

You're reading from   Unlocking Data with Generative AI and RAG Enhance generative AI systems by integrating internal data with large language models using RAG

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Product type Paperback
Published in Sep 2024
Publisher Packt
ISBN-13 9781835887905
Length 346 pages
Edition 1st Edition
Concepts
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Author (1):
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Keith Bourne Keith Bourne
Author Profile Icon Keith Bourne
Keith Bourne
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Table of Contents (20) Chapters Close

Preface 1. Part 1 – Introduction to Retrieval-Augmented Generation (RAG) FREE CHAPTER
2. Chapter 1: What Is Retrieval-Augmented Generation (RAG) 3. Chapter 2: Code Lab – An Entire RAG Pipeline 4. Chapter 3: Practical Applications of RAG 5. Chapter 4: Components of a RAG System 6. Chapter 5: Managing Security in RAG Applications 7. Part 2 – Components of RAG
8. Chapter 6: Interfacing with RAG and Gradio 9. Chapter 7: The Key Role Vectors and Vector Stores Play in RAG 10. Chapter 8: Similarity Searching with Vectors 11. Chapter 9: Evaluating RAG Quantitatively and with Visualizations 12. Chapter 10: Key RAG Components in LangChain 13. Chapter 11: Using LangChain to Get More from RAG 14. Part 3 – Implementing Advanced RAG
15. Chapter 12: Combining RAG with the Power of AI Agents and LangGraph 16. Chapter 13: Using Prompt Engineering to Improve RAG Efforts 17. Chapter 14: Advanced RAG-Related Techniques for Improving Results 18. Index 19. Other Books You May Enjoy

Cyclical graph setup

The next big step in our code is setting up our graphs using LangGraph:

  1. First, we import some important packages to get us started:
    from langgraph.graph import END, StateGraph
    from langgraph.prebuilt import ToolNode

    This code imports the following necessary classes and functions from the langgraph library:

    • END: A special node representing the end of the workflow
    • StateGraph: A class for defining the state graph of the workflow
    • ToolNode: A class for defining a node that represents a tool or action
  2. We then pass AgentState as an argument to the StateGraph class we just imported for defining the state graph of the workflow:
    workflow = StateGraph(AgentState)

    This creates a new instance of StateGraph called workflow and defines a new graph for that workflow StateGraph instance.

  3. Next, we define the nodes we will cycle between and assign our node functions to them:
    workflow.add_node("agent", agent)  # agent
    retrieve = ToolNode(tools)
    workflow.add_node...
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