D-Loop: Looped Diffusion Drafting for Speculative Decoding
Block diffusion accelerates speculative decoding by drafting multiple tokens in one forward pass. However, each position predicts a marginal distribution without observing earlier proposed tokens, limiting draft quality and acceptance length. We identify a concrete failure, the \emph{repetition trap}, in which neighbor...
Ke-Cheng Chen, Yu-Yang He, Cheng Gong et al.
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