Differentiale search indices go into this direction: https://arxiv.org/abs/2202.06991 https://arxiv.org/abs/2202.06991 The approach in the paper has rough edge

Differentiale search indices go into this direction: https://arxiv.org/abs/2202.06991 https://arxiv.org/abs/2202.06991 The approach in the paper has rough edges, but the metrics are bonkers (double digit percentage POINTS improvement over dual encoders). This paper was written before the LLM craze, and I am not aware of any further developments in that area. I think that this area might be ripe for some break through innovation.