Thanks for the response. You are probably right in the general case. I'm only searching hundreds of vectors, and it seems to be working surprisingly well (ast

Thanks for the response. You are probably right in the general case. I'm only searching hundreds of vectors, and it seems to be working surprisingly well (astonishingly well really!) - but I've only spent a few hours working on this and are far from having a proper measure of how good it is. I'll try the smaller subspace ideas - seems like it'd be easy to try and could work. > How big is the data set (number of vectors) that you are searching among The biggest dataset I've tried so far is 400 (it is searching similar scenes in a sports broadcast) > and are you performing single queries or batch queries? single - choose a scene and it finds similar ones. Thanks for Faiss BTW. I love love love it - long time member of the FB group you have. I think I switched to Annoy because I had a packaging issue some time back or something.