Verified65% confidenceFactExact time
向量数据库将文本转化为768至3072维高维浮点向量，利用近似最近邻算法以余弦相似度进行检索
3
Sources
65%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
AI持久记忆三层架构详解：Mem0、Zep与ContextNest深度对比
hackernewshackernews7/3/2026
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