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RAG 教程笔记(Task03)
2025-12-25 · via 程序员充电站
5. 索引构建 5.1 向量嵌入 向量嵌入(Embedding):将复杂数据对象(文本、图像等)转换为低维稠密数值向量的技术。核心原则是语义相似的对象在向量空间中距离更近,常用余弦相似度、点积、欧氏距 [……