hard20 pts · first answer countsragvector-searchevaluation

Choosing a vector index configuration

You must pick between HNSW, IVF-PQ and a disk-based index for 80 million vectors with a 50 ms p95 target. What is the soundest way to decide?

A.Measure recall@10 against exact results at your p95 target on a real sampleB.Pick whichever index has the most GitHub starsC.Pick the one with the highest recall, ignoring latency and memoryD.Pick the one that builds fastest, since build time drives quality

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Choosing a vector index configuration

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