# RAG Demystified: From Math to Self-Hosted Code

DevFeed: [RAG Demystified: From Math to Self-Hosted Code](<https://devfeed.tech/articles/rag-demystified-from-math-to-self-hosted-code-28525.md>)

Original publisher: [Read original article](<https://blog.risingstack.com/rag-demystified-from-math-to-self-hosted-code/>)

Author: RisingStack Engineering

Published: 2025-09-18T03:02:08Z

Content type: tutorial

Language: en

Sources: [RisingStack](<https://devfeed.tech/sources/risingstack.md>)

Topics: [Retrieval Augmented Generation (RAG)](<https://devfeed.tech/topics/retrieval-augmented-generation-rag.md>), [Large Language Model](<https://devfeed.tech/topics/llm.md>), [foundation-models](<https://devfeed.tech/topics/foundation-models.md>), [Self-hosted](<https://devfeed.tech/topics/self-hosted.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [code](<https://devfeed.tech/tags/code.md>), [large-language-model](<https://devfeed.tech/tags/large-language-model.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [rag](<https://devfeed.tech/tags/rag.md>), [retrieval-augmented-generation](<https://devfeed.tech/tags/retrieval-augmented-generation.md>), [self-hosted](<https://devfeed.tech/tags/self-hosted.md>), [use-cases](<https://devfeed.tech/tags/use-cases.md>)

## AI overview

This introductory article explains Retrieval-Augmented Generation (RAG), foundation models, and why adding specialized or up-to-date context can extend large language model capabilities. It introduces use cases such as support chatbots and tailored summaries and indicates that later chapters will cover RAG-related code, including self-hosted open-source models.

## Source excerpt

In today's AI hype you cannot miss the term "RAG," which stands for Retrieval Augmented Generation. In plain English, it stands for customizing large language model reasoning with your own context and knowledge. I searched a lot of resources and AI-generated content for this fairly simple technique to be explained well. I'm still looking for [...] The post RAG Demystified: From Math to Self-Hosted Code appeared first on RisingStack Engineering.