RAG

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Abbreviations / Acronyms / Synonyms:

retrieval-augmented generation

NIST AI 100-2e2025

Definitions:

A type of GenAI system in which a model is paired with a separate information retrieval system (or ”knowledge base”). Based on a user query, the RAG system identifies relevant information within the knowledge base and provides it to the GenAI model in context for the model to use in formulating its response. RAG systems allow the internal knowledge of a GenAI model to be modified without the need for retraining.
Sources:
NIST AI 100-2e2025 under retrieval-augmented generation

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