concepts

LlamaIndex

Framework for connecting LLMs with external data sources.

Definition

LlamaIndex (formerly GPT Index) is a data framework for LLM applications, focused on ingestion and retrieval.

Focus Areas: - Data ingestion from many sources - Indexing strategies - Query engines - Retrieval optimization

Data Connectors: - Documents (PDF, Word, etc.) - Databases - APIs - Web pages - Many more via LlamaHub

Index Types: - Vector index - Tree index - Keyword index - Knowledge graph

Vs LangChain: - LlamaIndex: Data-centric - LangChain: Orchestration-centric - Often used together

Use Cases: - Document Q&A - Structured data querying - Multi-document synthesis

Using LlamaIndex to build a Q&A system over company documents.

A technique combining information retrieval with text generation to improve accuracy.

Database optimized for storing and searching high-dimensional vector embeddings.

Popular framework for building applications with large language models.

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