Mechanism confirmed, baseline not beaten
2026
Star-Delta Hub Elimination
Remove a latent relay or hub token from an attention or graph layer and replace its two-hop influence by direct effective edges between retained tokens. The correction is a normalized rank-one update, so it can preserve hub-mediated communication while reducing the number of stored and processed states.
Paper: The Invariant Measure of Multiscale Markov Chains via Fast Arborescence Factorization
arXiv:2606.31596