# Apple researchers train learned networks to speed up RAG retrieval

> Original title: Faster Retrieval for Better, More Efficient RAG

- Source: Apple Machine Learning Research
- Published: 2026-11-05T00:00:00.000Z
- Bad Influence: https://badinfluence.news/items/egiowx6lbu0yo9hgf91zirckr
- Original: https://machinelearning.apple.com/research/faster-retrieval

## Summary

Apple researchers present SupportNet and KeyNet, small neural networks trained offline to route queries to their best-matching keys faster than centroid-based search, at ICML 2026. The paper, Amortizing Maximum Inner Product Search with Learned Support Functions, says the approach trades an upfront training cost for faster, more accurate retrieval at inference time.