Vector index
An approximate structure — usually HNSW or an IVF variant — that finds nearest neighbours without scanning every vector.
By Lattice editorial · Entry last reviewed · method
What it implies
Approximate means a recall/latency trade controlled by a build parameter, which is why you should benchmark recall against a brute-force scan on your own data rather than trusting a published figure. If your corpus is under a few million vectors, brute force is often fast enough and exactly correct.