Zhenghao Xing

PhD student, The Chinese University of Hong Kong

1 paper at NeurIPS 2025

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Poster Session 2

1 paper

Wednesday, December 3, 2025 · 4:30 PM → 7:30 PM

Exhibit Hall C,D,E

Delving into RL for Image Generation with CoT: A Study on DPO vs. GRPO

#5508 · Chengzhuo Tong, Ziyu Guo, Renrui Zhang, Wenyu Shan, Xinyu Wei, Zhenghao Xing, Hongsheng Li, Pheng-Ann Heng

We compare RL methods DPO & GRPO for image generation, showing their strengths & how rewards affect generalization. Explores scaling for better CoT-based synthesis.