> ## Documentation Index
> Fetch the complete documentation index at: https://nvd-54.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Graph RAG 集成

> 使用 LangChain Python 与 Graph RAG 集成。

## 概述

[Graph RAG](https://datastax.github.io/graph-rag/) provides a retriever interface
that combines **unstructured** similarity search on vectors with **structured**
traversal of metadata properties. This enables graph-based retrieval over **existing**
vector stores.

## 安装和设置

<CodeGroup>
  ```bash pip theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  pip install langchain-graph-retriever
  ```

  ```bash uv theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  uv add langchain-graph-retriever
  ```
</CodeGroup>

## 检索器

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
from langchain_graph_retriever import GraphRetriever
```

For more information, see the [Graph RAG Integration Guide](/oss/python/integrations/retrievers/graph_rag).

***

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