no code implementations • 13 Sep 2024 • Yaxuan Zhu, Zehao Dou, Haoxin Zheng, Yasi Zhang, Ying Nian Wu, Ruiqi Gao
Despite the merits of being versatile in solving various inverse problems without re-training, the performance of DPS is hindered by the fact that this posterior approximation can be inaccurate especially for high noise levels.
no code implementations • 11 Sep 2024 • Zehao Dou, Subhodh Kotekal, Zhehao Xu, Harrison H. Zhou
samples from an unknown \(\alpha\)-H\"{o}lder density \(f\) supported on \([-1, 1]\), we prove the minimax rate of estimating the score function of the diffused distribution \(f * \mathcal{N}(0, t)\) with respect to the score matching loss is \(\frac{1}{nt^2} \wedge \frac{1}{nt^{3/2}} \wedge (t^{\alpha-1} + n^{-2(\alpha-1)/(2\alpha+1)})\) for all \(\alpha > 0\) and \(t \ge 0\).
no code implementations • 23 Jul 2024 • Hengyu Fu, Zehao Dou, Jiawei Guo, Mengdi Wang, Minshuo Chen
Diffusion Transformer, the backbone of Sora for video generation, successfully scales the capacity of diffusion models, pioneering new avenues for high-fidelity sequential data generation.
no code implementations • 23 Jun 2024 • Zehao Dou, Minshuo Chen, Mengdi Wang, Zhuoran Yang
Diffusion models have revolutionized various application domains, including computer vision and audio generation.
no code implementations • 3 Oct 2023 • Yan Luo, Muhammad Osama Khan, Yu Tian, Min Shi, Zehao Dou, Tobias Elze, Yi Fang, Mengyu Wang
To address this research gap, we conduct the first comprehensive study on the fairness of 3D medical imaging models across multiple protected attributes.
no code implementations • 20 Apr 2023 • Sitan Chen, Zehao Dou, Surbhi Goel, Adam R Klivans, Raghu Meka
We consider the well-studied problem of learning a linear combination of $k$ ReLU activations with respect to a Gaussian distribution on inputs in $d$ dimensions.
no code implementations • 10 Feb 2022 • Zehao Dou, Jakub Grudzien Kuba, Yaodong Yang
Value function decomposition is becoming a popular rule of thumb for scaling up multi-agent reinforcement learning (MARL) in cooperative games.
Multi-agent Reinforcement Learning reinforcement-learning +1
no code implementations • 29 Sep 2021 • Zehao Dou, Yuanzhi Li
To the best of our knowledge, this is the very first result which provides an empirical observation and a strict theoretical guarantee on the one-sided convergence of Adam-type algorithms in min-max optimization.
no code implementations • 1 Jul 2021 • Zehao Dou, Zhuoran Yang, Zhaoran Wang, Simon S. Du
As one of the most popular methods in the field of reinforcement learning, Q-learning has received increasing attention.
1 code implementation • 7 May 2021 • Tangjun Wang, Zehao Dou, Chenglong Bao, Zuoqiang Shi
In many learning tasks with limited training samples, the diffusion connects the labeled and unlabeled data points and is a critical component for achieving high classification accuracy.
no code implementations • 9 Mar 2020 • Yuanzhi Li, Zehao Dou
In GANs, the training of the generator usually stops when the discriminator can no longer distinguish the generator's output from the set of training examples.
no code implementations • 15 Nov 2018 • Zehao Dou, Stanley J. Osher, Bao Wang
In this paper, we analyze efficacy of the fast gradient sign method (FGSM) and the Carlini-Wagner's L2 (CW-L2) attack.
1 code implementation • 10 Aug 2018 • Zehao Dou, Zhihua Zhang
Ham achieves a state-of-the-art BLEU score of 0. 26 on Chinese poem generation task and a nearly 6. 5% averaged improvement compared with the existing machine reading comprehension models such as BIDAF and Match-LSTM.