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Huabin Liu

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#natural language process... Preprint Sep 2026

UBTree: Parallel Tree Drafting via Unigram and Bigram Models for Speculative Decoding

Speculative decoding accelerates language model inference by verifying multiple draft tokens in a single target-model pass. Recent parallel drafters have achieved breakthrough performance in frontier production models, but their effectiveness deteriorates as the entropy of target distributions increases due to insuffic...

Chumeng Liang, Lin-Xuan Wang, Xin-Yu Peng et al. · 0 citations
#natural language process... Preprint Aug 2026

Reducing Pretraining-Generation Mismatch in Diffusion Language Models

Autoregressive language models align training and use: generation conditions on a clean prompt, and training predicts future tokens from clean left context. Diffusion language models offer parallel denoising, but native dLLM pretraining can randomly corrupt prompt and continuation tokens together, weakening the clean-p...

Xiaocheng Lu, Huabin Liu, Song Guo et al. · 0 citations
Preprint Aug 2026

LLaDA MoE v2: Scaling Mixture-of-Experts Diffusion Language Models

This work systematically characterize how optimization hyperparameters, compute allocation, and architecture scale for MoE dLLMs, identifying quantitative differences from scaling trends previously reported for AR models.

Fengqi Zhu, Shaoxuan Xu, Jingyang Ou et al. · 1 citation

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