Asked about Storing and searching vectors

What does approximate nearest neighbour trade away?

An answer that works

Recall. It searches a promising subset rather than everything, so it can miss a vector exact search would have found. Both HNSW and IVF expose a knob trading accuracy against speed.

Reading an answer is not being able to give one. The section that teaches this is Storing and searching vectors, 6 hours of Vector databases.

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