Search Results for author: Dongsheng An

Found 8 papers, 1 papers with code

Backdoor Attack with Mode Mixture Latent Modification

no code implementations12 Mar 2024 Hongwei Zhang, Xiaoyin Xu, Dongsheng An, Xianfeng GU, Min Zhang

Backdoor attacks become a significant security concern for deep neural networks in recent years.

Backdoor Attack Image Classification

Learning for Transductive Threshold Calibration in Open-World Recognition

no code implementations19 May 2023 Qin Zhang, Dongsheng An, Tianjun Xiao, Tong He, Qingming Tang, Ying Nian Wu, Joseph Tighe, Yifan Xing, Stefano Soatto

In deep metric learning for visual recognition, the calibration of distance thresholds is crucial for achieving desired model performance in the true positive rates (TPR) or true negative rates (TNR).

Metric Learning Open Set Learning

Learning Deep Latent Variable Models by Short-Run MCMC Inference With Optimal Transport Correction

no code implementations CVPR 2021 Dongsheng An, Jianwen Xie, Ping Li

Learning latent variable models with deep top-down architectures typically requires inferring the latent variables for each training example based on the posterior distribution of these latent variables.

Efficient Optimal Transport Algorithm by Accelerated Gradient descent

no code implementations12 Apr 2021 Dongsheng An, Na lei, Xianfeng GU

Basically, the non-smooth c-transform of the Kantorovich potential is approximated by the smooth Log-Sum-Exp function, which finally smooths the original non-smooth Kantorovich dual functional (energy).

AE-OT: A NEW GENERATIVE MODEL BASED ON EXTENDED SEMI-DISCRETE OPTIMAL TRANSPORT

1 code implementation ICLR 2020 Dongsheng An, Yang Guo, Na lei, Zhongxuan Luo, Shing-Tung Yau, Xianfeng GU

In order to tackle the both problems, we explicitly separate the manifold embedding and the optimal transportation; the first part is carried out using an autoencoder to map the images onto the latent space; the second part is accomplished using a GPU-based convex optimization to find the discontinuous transportation maps.

AE-OT-GAN: Training GANs from data specific latent distribution

no code implementations ECCV 2020 Dongsheng An, Yang Guo, Min Zhang, Xin Qi, Na lei, Shing-Tung Yau, Xianfeng GU

Though generative adversarial networks (GANs) areprominent models to generate realistic and crisp images, they often encounter the mode collapse problems and arehard to train, which comes from approximating the intrinsicdiscontinuous distribution transform map with continuousDNNs.

Mode Collapse and Regularity of Optimal Transportation Maps

no code implementations8 Feb 2019 Na lei, Yang Guo, Dongsheng An, Xin Qi, Zhongxuan Luo, Shing-Tung Yau, Xianfeng GU

This work builds the connection between the regularity theory of optimal transportation map, Monge-Amp\`{e}re equation and GANs, which gives a theoretic understanding of the major drawbacks of GANs: convergence difficulty and mode collapse.

Fast and High Quality Highlight Removal from A Single Image

no code implementations1 Dec 2015 Dongsheng An, Jinli Suo, Xiangyang Ji, Haoqian Wang, Qionghai Dai

Specifically, this paper derives a normalized dichromatic model for the pixels with identical diffuse color: a unit circle equation of projection coefficients in two subspaces that are orthogonal to and parallel with the illumination, respectively.

Clustering highlight removal +1

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