Search Results for author: Zhenyuan Zhang

Found 10 papers, 4 papers with code

Adversarial Purification and Fine-tuning for Robust UDC Image Restoration

no code implementations21 Feb 2024 Zhenbo Song, Zhenyuan Zhang, Kaihao Zhang, Wenhan Luo, Zhaoxin Fan, Jianfeng Lu

This study delves into the enhancement of Under-Display Camera (UDC) image restoration models, focusing on their robustness against adversarial attacks.

Image Restoration

Composite Sorting

no code implementations12 Mar 2023 Job Boerma, Aleh Tsyvinski, Ruodu Wang, Zhenyuan Zhang

We completely characterize optimal sorting and additionally show it is more positive when mismatch costs are less concave.

Simultaneous Optimal Transport

no code implementations10 Jan 2022 Ruodu Wang, Zhenyuan Zhang

We propose a general framework of mass transport between vector-valued measures, which will be called simultaneous optimal transport (SOT).

Sparse-softmax: A Simpler and Faster Alternative Softmax Transformation

no code implementations23 Dec 2021 Shaoshi Sun, Zhenyuan Zhang, BoCheng Huang, Pengbin Lei, Jianlin Su, Shengfeng Pan, Jiarun Cao

The softmax function is widely used in artificial neural networks for the multiclass classification problems, where the softmax transformation enforces the output to be positive and sum to one, and the corresponding loss function allows to use maximum likelihood principle to optimize the model.

Classification

A limit theorem for Bernoulli convolutions and the $Φ$-variation of functions in the Takagi class

no code implementations4 Feb 2021 Xiyue Han, Alexander Schied, Zhenyuan Zhang

We consider a probabilistic approach to compute the Wiener--Young $\Phi$-variation of fractal functions in the Takagi class.

Probability Classical Analysis and ODEs

TAMPC: A Controller for Escaping Traps in Novel Environments

1 code implementation23 Oct 2020 Sheng Zhong, Zhenyuan Zhang, Nima Fazeli, Dmitry Berenson

We propose an approach to online model adaptation and control in the challenging case of hybrid and discontinuous dynamics where actions may lead to difficult-to-escape "trap" states, under a given controller.

Model Predictive Control

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