Progressive verification speeds up diffusion language model inference

PV-Decoding uses confidence thresholds and progressive verification to reduce model forward passes by 8–37% while keeping accuracy drop under 1.3%.

Chinese Tech
Renxi Liu · Yiming Li · Shengyin Sun · Chen Chen · Xian Wang · Shuai Yang · +5 more

Huawei Technologies · City University of Hong Kong

Research Digest··2 min read
The authors propose PV-Decoding, a confidence-driven speculative decoding framework for discrete diffusion language models.

Discrete diffusion language models (dLLMs) iteratively denoise masked sequences, updating multiple tokens in parallel per step.

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