New ANN libraries much faster than flann! about flann

[stephematician]

That's a great resource.

It's hard to say whether FLANN is slower or faster because it depends on the size of the index, the dimensions, the algorithm used, the number of queries, the precision required, and things like the entropy/mutual information of the data - there are many factors!

In problems where the number of queries >> size of the index, at higher dimensions, HNSW and others are probably faster than FLANN - but it can still vary depending on some of those factors listed.

To make it easier to find - more up-to-date comparisons of ANN can be found via https://github.com/erikbern/ann-benchmarks/.