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Chengyuan Wang

3 accepted papers

2026

UDM-GRPO: Stable and Efficient Group Relative Policy Optimization for Uniform Discrete Diffusion Models

ICML 2026spotlight

Uniform Discrete Diffusion (UDM) has recently emerged as a promising paradigm for discrete generative modeling; however, its integration with reinforcement learning remains largely unexplored. We observe that naively adapting GRPO to UDM leads to unstable training and marginal performance. To addres…

Cited by 0SourceScholar
2025

Geometric Feature-Driven Metric Learning for 3D Craniofacial Superimposition

ICASSP 2025accepted

Craniofacial superimposition is a crucial forensic science technique to identify human remains by matching skulls to facial images. However, this task is challenging due to significant morphological differences between skulls and faces, limited paired samples, and high data dimensionality. We propos…

Cited by 0SourceScholar
2020

A Neural Rendering Framework for Free-Viewpoint Relighting

CVPR 2020poster

We present a novel Relightable Neural Renderer (RNR) for simultaneous view synthesis and relighting using multi-view image inputs. Existing neural rendering (NR) does not explicitly model the physical rendering process and hence has limited capabilities on relighting. RNR instead models image format…

Cited by 60PDFcodeScholar