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2 Commits (e153cac41908abea6715b5ee72b9cd7629ad67a1)

Author SHA1 Message Date
Alexandr Guzhva 868e17f294 OSS legal requirements (#2698) 
Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2698

Add headers about copyright.

Reviewed By: algoriddle

Differential Revision: D43085637

fbshipit-source-id: 5a57876b7047097ffe01cd79322674625d9bca34
 2023-02-07 14:32:56 -08:00
Alexandr Guzhva b9bf2490a3 Add facilities for approximate evaluation of min-k distances via heap. Affects RQ / PRQ / RQ_LUT / PRQ_LUT (#2633) 
Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2633

The core idea.
Instead of putting every element of the dataset into MaxHeap, split the dataset into buckets and let every bucket track elements min-1, min-2 or min-3 distances.

Applied to ResidualQuantizer class for vector codec purposes.

An example
```
rq.approx_topk_mode = faiss.APPROX_TOPK_BUCKETS_B16_D2
```

Reviewed By: mdouze

Differential Revision: D42044398

fbshipit-source-id: 43169026476650442806a31d1c1aa2d5d5028e65
 2023-01-03 14:39:11 -08:00