Search Results for author: Zhehui Chen

Found 10 papers, 1 papers with code

Invisible Watermarking for Audio Generation Diffusion Models

2 code implementations22 Sep 2023 Xirong Cao, Xiang Li, Divyesh Jadav, Yanzhao Wu, Zhehui Chen, Chen Zeng, Wenqi Wei

Diffusion models have gained prominence in the image domain for their capabilities in data generation and transformation, achieving state-of-the-art performance in various tasks in both image and audio domains.

Audio Generation

APIK: Active Physics-Informed Kriging Model with Partial Differential Equations

no code implementations22 Dec 2020 Jialei Chen, Zhehui Chen, Chuck Zhang, C. F. Jeff Wu

We present in this work a PDE Informed Kriging model (PIK), which introduces PDE information via a set of PDE points and conducts posterior prediction similar to the standard kriging method.

Learning to Defense by Learning to Attack

no code implementations ICLR Workshop DeepGenStruct 2019 Zhehui Chen, Haoming Jiang, Yuyang Shi, Bo Dai, Tuo Zhao

From the perspective of generative learning, our proposed method can be viewed as learning a deep generative model for generating adversarial samples, which is adaptive to the robust classification.

Adversarial Attack Robust classification

On Computation and Generalization of GANs with Spectrum Control

no code implementations28 Dec 2018 Haoming Jiang, Zhehui Chen, Minshuo Chen, Feng Liu, Dingding Wang, Tuo Zhao

Specifically, we propose a new reparameterization approach for the weight matrices of the discriminator in GANs, which allows us to directly manipulate the spectra of the weight matrices through various regularizers and constraints, without intensively computing singular value decompositions.

Learning to Defend by Learning to Attack

no code implementations3 Nov 2018 Haoming Jiang, Zhehui Chen, Yuyang Shi, Bo Dai, Tuo Zhao

Adversarial training provides a principled approach for training robust neural networks.

Adversarial Attack Adversarial Defense +3

On Landscape of Lagrangian Functions and Stochastic Search for Constrained Nonconvex Optimization

no code implementations13 Jun 2018 Zhehui Chen, Xingguo Li, Lin F. Yang, Jarvis Haupt, Tuo Zhao

However, due to the lack of convexity, their landscape is not well understood and how to find the stable equilibria of the Lagrangian function is still unknown.

A Diffusion Approximation Theory of Momentum SGD in Nonconvex Optimization

no code implementations14 Feb 2018 Tianyi Liu, Zhehui Chen, Enlu Zhou, Tuo Zhao

Our theoretical discovery partially corroborates the empirical success of MSGD in training deep neural networks.

Bayesian Inference Dimensionality Reduction +1

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