Preprint
Aug 2026
DARTree: Speculative Diffusion Decoding with Autoregressive Draft Trees
DARTree is introduced, a training-free speculative decoding method that extends a pretrained AR correction head from chains to trees, and achieves the highest average acceptance length and speedup in all four model--temperature configurations.
Tianyi Li, Yaxin Luo, Xinyi Shang et al.
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