Not strictly google but microsoft/bing too, here's the top ones from my notes: https://arxiv.org/abs/2410.14452 https://arxiv.org/abs/2410.14452 spfresh, https

Not strictly google but microsoft/bing too, here's the top ones from my notes: https://arxiv.org/abs/2410.14452 https://arxiv.org/abs/2410.14452 spfresh, https://arxiv.org/abs/2111.08566 https://arxiv.org/abs/2111.08566 spann, https://arxiv.org/abs/2405.12497 https://arxiv.org/abs/2405.12497 rabitq, https://arxiv.org/abs/2509.06046 https://arxiv.org/abs/2509.06046 diskann, I have a variety of blogs that I used too and reference implementations! It's a Rabit[Q]uantized Hierchical Balanced Clustering algorithm we use for the vector index and we use a chunked segment index for the sparse index if you're curious! Happy to discuss more!