Sanghyun Lee, 남원진, Seungho Jang, Jaeho Lee, Jiho Park, Jaewoon Lee, Seungryong Kim · 2026 · arXiv (Cornell University)
DOI: 10.48550/arxiv.2610.26531 · cited by 0 works (OpenAlex) · open-access PDF
Cependant, chaque passage ne produit qu'un bloc de longueur fixe à partir d'une seule ancre générée par cible, limitant jusqu'à quel point le dessin peut s'étendre. Pendant ce temps, la vérification cible calcule les états cachés même à des positions au-delà du premier rejet, mais ces états sont généralement rejetés plutôt que réutilisés. Nous proposons ReAnchor, une méthode sans formation qui réancore un dessinateur prétrainé à des positions déplacées en utilisant des états de vérificateur rejetés pour générer des blocs de dessin parallèles. Ces blocs améliorent les prédictions au sein du bloc original et la couverture d'extension au-delà de son point final. À la température d'échantill
Machine translation (Meta M2M100); the English original follows.
Block diffusion drafters accelerate speculative decoding by generating multiple draft tokens in a single forward pass. However, each pass produces only a fixed-length block from a single target-generated anchor, limiting how far the draft can extend. Meanwhile, target verification computes hidden states even at positions beyond the first rejection, but these states are typically discarded rather than reused. We propose ReAnchor, a training-free method that reanchors a pretrained drafter at shifted positions using discarded verifier states to generate parallel draft blocks. These blocks improve predictions within the original block and extend coverage beyond its endpoint. At sampling temperature of T=0, ReAnchor achieves its largest average gains on Gemma 4-12B, improving acceptance length by 19.4% and decoding speed by 17.9% across eight benchmarks. Averaged equally over four target models and eight benchmarks, it improves acceptance length by 15.2% and decoding speed by 13.4% with pretrained DFlash drafters.
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Topics: Decoding methods, Computer science, Block (permutation group theory), Reuse, Limiting, Algorithm
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