forked from apache/lucene
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Stop exploring HNSW graph if scores are not getting better. (apache#1…
…2770) I noticed while testing lower dimensionality and quantization, we would explore the HNSW graph way too much. I was stuck figuring out why until I noticed the searcher checks for distance equality (not just if the distance is better) when exploring neighbors-of-neighbors. This seems like a bad heuristic, but to double check I looked at what nmslib does. This pointed me back to this commit: nmslib/nmslib#106 Seems like this performance hitch was discovered awhile ago :). This commit adjusts HNSW to only explore the graph layer if the distance is actually better.
- Loading branch information
Showing
3 changed files
with
9 additions
and
8 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters