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---
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title: "语义搜索"
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type: concept
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tags: []
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sources: [https://github.com/zilliztech/memsearch]
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last_updated: 2026-04-17
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---
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## Definition
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语义搜索是通过向量嵌入实现按语义相似度而非关键词匹配的信息检索方式。
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## Principle
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将文本转换为数值向量(向量嵌入),通过计算向量间的余弦相似度找到语义相近的内容。
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## Use Case
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- "我们选了什么缓存方案?"能找到包含"cache solution"相关内容,即使问题中不含"caching"一词
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## Relation
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- 基于 [[向量嵌入]] 技术实现
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- 结合 [[BM25]] 关键词搜索提升准确率
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## Aliases
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- Semantic Search
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