Light RAG: Simple and Fast Retrieval Augmented Generation

A comprehensive guide to Light RAG, a new retrieval augmented generation method for efficient and cost-effective document querying.

Duration: 19 minutes
Level: Intermediate
8 Lessons
Retrieval Augmented Generation Prompt Engineering Large Language Models

Course Timeline

00:00

🎥 Introduction to Light RAG

Overview of Light RAG, its advantages over Graph RAG, and its open-source availability.

01:29

💡 Understanding the Need for Light RAG

Explores the limitations of standard RAG systems and the benefits of knowledge graph-based approaches like Light RAG and Graph RAG.

03:06

⚙️ Light RAG Algorithm: Indexing and Retrieval

Detailed explanation of Light RAG's two-part algorithm: indexing (entity and relationship extraction) and retrieval (low-level, high-level, and hybrid).

08:58

📊 Light RAG vs. Graph RAG: Performance and Cost Comparison

Comparison of Light RAG and Graph RAG performance across various datasets, highlighting Light RAG's cost-effectiveness.

11:09

🚀 Setting up Light RAG Locally

Step-by-step guide on installing Light RAG using Git clone or pip, including virtual environment setup and package installation.

12:54

💻 Running Light RAG: Code Example and Explanation

Walkthrough of a sample Python code, demonstrating how to use Light RAG for querying, including data loading, indexing, and query execution in different modes (naive, local, global, hybrid).

15:57

🔍 Analyzing Light RAG's Output and Results

Interpretation of Light RAG's output, including the generated knowledge graph, query results from different retrieval modes, and token usage comparison with Graph RAG.

19:22

Outro

Summary of Light RAG's capabilities and a recommendation to explore the project's GitHub repository for more details.