Comment by ianbutler

Nice this will get you acquainted with many of the methods used currently, as my small addition to the list of things you can learn. https://ai.googleblog.com/2020/07/announcing-scann-efficient... https://github.com/google-research/google-research/tree/mast...

Google released SCaNN a few years ago and back then it wasn't implemented in many tools like Milvus etc. Maybe it is now, it's been a few years since I needed a scalable vector db. I believe it's still state of the art, and they use a novel approach to quantization, which was the key intuition.

I didn't see it included in the PDF from a quick scan (hah!)