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如何在资源有限的环境中实现RAG功能?

2025-08-29 1.5 K

Background

检索增强生成(RAG)通常会引入搜索引擎等重型组件,但PocketFlow给出了轻量级实现方案。

Specific implementation steps

  1. 数据准备:将资料保存为txt/csv等简单格式
  2. 建立检索节点:
    def retrieve(x):
        with open("data.txt") as f:
            return [line for line in f if x in line]
    flow.add_node("search", retrieve)
  3. 连接生成节点:
    flow.add_node("generate", lambda x: f"根据资料:{x[:100]}...")
    flow.connect("search", "generate")

Optimization Tips

  • 对小文件使用内存缓存
  • 对大文件建议先建立倒排索引
  • 可结合fuzzywuzzy等轻量库提升匹配精度

该方法可在100MB内存的设备上流畅运行。

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