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cs.LG2026

Diffusion Model for Manifold Data: Score Decomposition, Curvature, and Statistical Complexity

Zixuan Zhang, Kaixuan Huang, Tuo Zhao +2

Diffusion models have become a leading framework in generative modeling, yet their theoretical understanding -- especially for high-dimensional data concentrated on low-dimensional…

cs.LG2024

Diffusion Transformer Captures Spatial-Temporal Dependencies: A Theory for Gaussian Process Data

Hengyu Fu, Zehao Dou, Jiawei Guo +2

Diffusion Transformer, the backbone of Sora for video generation, successfully scales the capacity of diffusion models, pioneering new avenues for high-fidelity sequential data gen…

cs.LG2024

Provable Statistical Rates for Consistency Diffusion Models

Zehao Dou, Minshuo Chen, Mengdi Wang +1

Diffusion models have revolutionized various application domains, including computer vision and audio generation. Despite the state-of-the-art performance, diffusion models are kno…

cs.LG2024

Self-Play with Adversarial Critic: Provable and Scalable Offline Alignment for Language Models

Xiang Ji, Sanjeev Kulkarni, Mengdi Wang +1

This work studies the challenge of aligning large language models (LLMs) with offline preference data. We focus on alignment by Reinforcement Learning from Human Feedback (RLHF) in…

cs.LG202419 cited

An Overview of Diffusion Models: Applications, Guided Generation, Statistical Rates and Optimization

Minshuo Chen, Song Mei, Jianqing Fan +1

Diffusion models, a powerful and universal generative AI technology, have achieved tremendous success in computer vision, audio, reinforcement learning, and computational biology.…

cs.LG20245 cited

Unveil Conditional Diffusion Models with Classifier-free Guidance: A Sharp Statistical Theory

Hengyu Fu, Zhuoran Yang, Mengdi Wang +1

Conditional diffusion models serve as the foundation of modern image synthesis and find extensive application in fields like computational biology and reinforcement learning. In th…