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Yujie Zhou

6 accepted papers

2026

DiCache: Let Diffusion Model Determine Its Own Cache

ICLR 2026poster

Recent years have witnessed the rapid development of acceleration techniques for diffusion models, especially caching-based acceleration methods. These studies seek to answer two fundamental questions: _"When to cache"_ and _"How to use cache"_, typically relying on predefined empirical laws or data…

Cited by 0SourcecodeScholar
2026

Fine-Grained GRPO for Precise Preference Alignment in Flow Models

CVPR 2026

The incorporation of online reinforcement learning (RL) into diffusion and flow-based generative models has recently gained attention as a powerful paradigm for aligning model behavior with human preferences. By leveraging stochastic sampling via Stochastic Differential Equations (SDEs) during the d

Cited by 0SourcecodeScholar
2025

HiFlow: Training-free High-Resolution Image Generation with Flow-Aligned Guidance

NeurIPS 2025poster

Text-to-image (T2I) diffusion/flow models have drawn considerable attention recently due to their remarkable ability to deliver flexible visual creations. Still, high-resolution image synthesis presents formidable challenges due to the scarcity and complexity of high-resolution content. Recent appro…

Cited by 0SourceScholar
2025

The Devil is in the Prompts: Retrieval-Augmented Prompt Optimization for Text-to-Video Generation

CVPR 2025poster

The evolution of Text-to-video (T2V) generative models, trained on large-scale datasets, has been marked by significant progress. However, the sensitivity of T2V generative models to input prompts highlights the critical role of prompt design in influencing generative outcomes. Prior research has pr…

2023

Self-Supervised Action Representation Learning from Partial Spatio-Temporal Skeleton Sequences

AAAI 2023technical

Self-supervised learning has demonstrated remarkable capability in representation learning for skeleton-based action recognition. Existing methods mainly focus on applying global data augmentation to generate different views of the skeleton sequence for contrastive learning. However, due to the rich…