Authors

Zhengyan Wan

Publications 2

Preprint Open access

Iterative Exact Discrete Guidance for Energy-Based Sampling

Yuwen Qian, Yidong Ouyang, Zhengyan Wan et al. · 2026

Sampling from unnormalized distributions over large discrete state spaces becomes difficult when a multimodal target is far from a tractable reference. We introduce Iterative Exact Discrete Guidance (IEDG), a population-exact, trajectory-wise guidance framework for unnormalized discrete targets. Rather than learn the f …

Preprint Open access

Acceleration of Diffusion Language Model through Discrete Average Generator

Yidong Ouyang, Zhengyan Wan, Themis Haris et al. · 2026

Discrete diffusion models and flow matching have emerged as powerful frameworks for generative modeling over discrete state spaces, yet efficient few-step generation remains a fundamental challenge. In this work, we introduce the Discrete Average Generator, a principled extension of MeanFlow to Continuous-Time Markov C …

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