Unverified50% confidenceFactExact time
在实际embedding系统中余弦相似度取到-1的情况极其罕见，负相似度并不天然对应反义关系
1
Sources
50%
Confidence
Long-term
Relevance
7/14/2026
First Seen
Sources
余弦相似度-1代表语义相反？机器学习面试高频陷阱解析
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