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