facebookresearch / faiss

A library for efficient similarity search and clustering of dense vectors.
https://faiss.ai
MIT License
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FastScan vs Scann #3781

Closed WyLmYYA closed 3 months ago

WyLmYYA commented 3 months ago

Summary

In the performance of ANN benchmark, ivfpqfs performs much worse than scann, but in Faiss experiment, this is unreasonable. May I ask what the reason is. Have you seen this experiment,Which data should I trust?If necessary, what scenario would you recommend using fast scan in. If someone could answer me, I would be very grateful