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pg中扩展IVFPQ和HNSW索引的搜索速度问题
你好!想问一下,使用pg的索引扩展方式扩展IVFPQ和HNSW索引,相比于在内存中进行IVFPQ和HNSW搜索,搜索速度怎么样呢,会有很大的下降吗,按照我的理解,每次搜索,都需要读取PQ码或者特征用于距离计算,相比于那种在内存中已经加载了全部的PQ码或者特征的方式,搜索的速度应该会变慢,不知道你们的实验结果是怎么样的呢?谢谢!
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