Retrieval-augmented generation (RAG)
Bilgi getirim destekli üretim (RAG)
D3
Retrieval-augmented generation is a generation approach that combines a model’s parametric knowledge with retrieved external information.
Review status: 2026-11-26
Technical explanation
A RAG application can retrieve documents or other resources at runtime and add selected material to the model context before it generates a response.
Conceptual boundaries
RAG is not retrieval alone, does not necessarily use vector search, and does not guarantee grounding, provenance, or factual correctness.
Provider-neutral example
Before drafting an answer about a policy, an application can retrieve relevant policy sections and supply them with the question to a language model.
Limitations
Retrieved material can be untrusted or wrong, and the original RAG study reports comparative results rather than a guarantee that every RAG answer is factual.
Related concepts
Atomic claims and evidence
1.1Lewis et al., Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks
- Source
- Lewis et al., Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks
- Source role
- Authoritative source
- Exact locator
- Abstract; Section 1: parametric/non-parametric memory and dense Wikipedia index
- Supported claim
- The original RAG paper defines RAG models as combining pre-trained parametric and non-parametric memory for language generation, with a neural retriever accessing an external index in its proposed formulation.
- Last verification
- Review due
- Scope limitation
- The neural-retriever and dense-index details describe the paper’s formulation and do not prescribe every later RAG implementation.
2.1NIST AI 100-2e2025, Adversarial Machine Learning: A Taxonomy and Terminology of Attacks and Mitigations
- Source
- NIST AI 100-2e2025, Adversarial Machine Learning: A Taxonomy and Terminology of Attacks and Mitigations
- Source role
- Authoritative source
- Exact locator
- Section 3.1.1 printed p. 39; Figure 6 printed p. 39
- Supported claim
- NIST describes RAG application context as query-dependent runtime material from external sources and recommends reviewing source and citation claims in GAI outputs.
- Last verification
- Review due
- Scope limitation
- This is risk-management guidance and does not assert that every RAG system uses the same pipeline or produces incorrect output.
2.2NIST AI 600-1, Artificial Intelligence Risk Management Framework: Generative Artificial Intelligence Profile — D3 evidence slice
- Source
- NIST AI 600-1, Artificial Intelligence Risk Management Framework: Generative Artificial Intelligence Profile — D3 evidence slice
- Source role
- Authoritative source
- Exact locator
- MEASURE 2.5, MS-2.5-003 printed p. 32: review and verify sources and citations in GAI outputs
- Supported claim
- NIST describes RAG application context as query-dependent runtime material from external sources and recommends reviewing source and citation claims in GAI outputs.
- Last verification
- Review due
- Scope limitation
- This is risk-management guidance and does not assert that every RAG system uses the same pipeline or produces incorrect output.