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Understanding RAG and Agentic Document Workflow (ADW)

Written on March 28, 2025 by alpha.

Last updated March 28, 2025.

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Introduction

In today’s AI landscape, Retrieval-Augmented Generation (RAG) and Agentic Document Workflow (ADW) are game-changers for handling information and automating tasks. Let’s explore them with simple explanations, examples, and visuals—plus a clever analogy from NVIDIA.


What is RAG?

Imagine a judge hearing a tricky case, like a medical malpractice suit. Judges rely on their general knowledge of the law, but for specialized cases, they send court clerks to dig up specific precedents from a law library. Once the clerks return with the details, the judge crafts a ruling grounded in that info.

Large language models (LLMs) work similarly. They’re smart but need extra help for precise, authoritative answers. That’s where Retrieval-Augmented Generation (RAG) comes in—the “court clerk” of AI. (Hat tip to NVIDIA for this analogy—read more here).

How RAG Works

  1. Retrieval: The system searches external sources (documents, databases, or the web) for relevant info based on your question.
  2. Generation: The AI (ChatGPT, Grok!) uses that info to create a clear, accurate response.

RAG Architecture

[RAG Architecture]

RAG

This diagram shows how RAG combines a retrieval system (the clerk) with a generative model (the judge) to produce informed answers.

RAG Workflow

[RAG Workflow]

Workflow

Here’s the step-by-step: query → retrieve data → generate response. Simple, yet powerful!

Example of RAG

You ask: “What’s the latest in solar energy?”

  • Retrieval: I fetch a 2025 article about a new solar panel with 25% better efficiency.
  • Generation: I say: “In 2025, a new nanomaterial coating boosted solar panel efficiency by 25%.”
    Without RAG, I’d be stuck with outdated info—RAG keeps it fresh.

Limitations of RAG

[Limitations of RAG]

rag-limit

[Solution of RAG]

rag-limit

RAG isn’t perfect. It can struggle if the retrieved data is irrelevant, outdated, or too complex for the model to summarize well. Think of it like a clerk bringing back the wrong books!


What is Agentic Document Workflow (ADW)?

Now, picture an AI assistant that doesn’t just answer questions but actively manages documents—like a super-smart secretary. That’s Agentic Document Workflow (ADW). It processes, organizes, and even makes decisions based on document content.

How ADW Works

  1. Input: You give it a document (PDF, text, etc.).
  2. Processing: The AI reads it, extracts key details, and decides what to do.
  3. Output: It delivers a result—like a summary or an action plan.

Example of ADW

You upload a 10-page contract:

  • Processing: The AI spots key terms (e.g., “Payment: $500, due April 15”) and flags a vague clause.
  • Output: “Your contract says $500 is due April 15, 2025. Clause 3.2 is unclear—check with legal.”
    No more manual digging—ADW does the heavy lifting.

RAG vs. ADW: Quick Comparison

  • RAG: Retrieves data to answer questions (think Q&A with live info).
  • ADW: Handles and acts on documents (think document assistant).

Real-World Combo Example

You email: “Summarize my invoice and tell me about tax changes.”

  • ADW: Reads your invoice PDF and summarizes: “Total: $500, due March 31.”
  • RAG: Pulls 2025 tax updates and adds: “New laws increase deductions by 10%.”
    Together, they’re a powerhouse!

Why They Matter

  • RAG: Makes AI answers accurate and current—like a judge with the latest case law.
  • ADW: Streamlines document tasks—like a clerk who organizes everything for you.

With RAG and ADW, AI becomes more reliable and practical. Ready to use them in your next project?


Credits

  • NVIDIA: For the insightful judge-and-clerk analogy that makes RAG easy to grasp (source).
  • Samrat Kar: For providing the images (RAG Architecture, RAG Workflow, Limitations of RAG) (source).
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