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cs.LG2026
Drifting Preference Optimization for One-Step Generative Models
Zhou Jiang, Yandong Wen, Zhen Liu
One-step text-to-image generators are attractive for deployment because they generate an image with a single forward pass, but preference finetuning them remains difficult: standar…
cs.CV2026
Rethinking Preference Alignment for Diffusion Models with Classifier-Free Guidance
Zhou Jiang, Yandong Wen, Zhen Liu
Aligning large-scale text-to-image diffusion models with nuanced human preferences remains challenging. While direct preference optimization (DPO) is simple and effective, large-sc…