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---
title: "Knowledge Base"
type: concept
last_updated: 2026-04-27
---
## Definition
集中存储、结构化索引、可按需检索的个人或组织知识集合——将分散的信息(文章、笔记、文档、网页)转化为可搜索、可链接的知识资产。
## Key Characteristics
- **集中存储**所有知识来源统一入口URL/文件/对话内容)
- **结构化索引**:通过 Embedding 向量化或 Metadata 标签实现高效检索
- **可搜索**:支持关键词搜索、语义搜索或两者混合搜索
- **可链接**:知识条目之间相互引用,形成知识网络
## Relationship to Related Concepts
- [[Semantic Search]]:知识库的核心检索技术
- [[RAG]]:知识库是 RAG 系统的外部知识来源
- [[Second Brain]]:知识库的终极目标——成为个人的第二大脑
- [[Personal Knowledge Base (RAG)]]知识库在个人场景的具体实现URL 摄入 + 语义搜索)
## Sources
- [[knowledge-base-rag]]