Applied AI·Embeddings and retrieval

you stop comparing the query against every vector you stored and accept a slightly worse top ten in exchange for a search that finishes in milliseconds.

Approximate nearest neighbour (ANN)

Also calledANN

Draft summary, pending review

Index structures that find near-enough neighbours in a fraction of the time by not examining every vector. The universal trade: a little recall for a lot of speed. All production vector search at scale is ANN.