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Despite their appealing flexibility, deep neural networks (DNNs) are vulnerable against adversarial examples. Various adversarial defense strategies have been proposed to resolve this problem, but they typically demonstrate restricted…

Machine Learning · Computer Science 2021-06-01 Zhijie Deng , Xiao Yang , Shizhen Xu , Hang Su , Jun Zhu

This letter proposes a novel sparsity-aware adaptive filtering scheme and algorithms based on an alternating optimization strategy with shrinkage. The proposed scheme employs a two-stage structure that consists of an alternating…

Systems and Control · Computer Science 2023-07-19 Rodrigo C. de Lamare , Raimundo Sampaio-Neto

We propose Matrix ALPS for recovering a sparse plus low-rank decomposition of a matrix given its corrupted and incomplete linear measurements. Our approach is a first-order projected gradient method over non-convex sets, and it exploits a…

Information Theory · Computer Science 2012-06-22 Anastasios Kyrillidis , Volkan Cevher

Although the recent progress is substantial, deep learning methods can be vulnerable to the maliciously generated adversarial examples. In this paper, we present a novel training procedure and a thresholding test strategy, towards robust…

Machine Learning · Computer Science 2018-11-08 Tianyu Pang , Chao Du , Yinpeng Dong , Jun Zhu

Self-supervised learning (SSL) has recently achieved promising performance for 3D medical image analysis tasks. Most current methods follow existing SSL paradigm originally designed for photographic or natural images, which cannot…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Yankai Jiang , Mingze Sun , Heng Guo , Xiaoyu Bai , Ke Yan , Le Lu , Minfeng Xu

The continual appearance of new objects in the visual world poses considerable challenges for current deep learning methods in real-world deployments. The challenge of new task learning is often exacerbated by the scarcity of data for the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Can Peng , Kun Zhao , Tianren Wang , Meng Li , Brian C. Lovell

We present a new method for black-box adversarial attack. Unlike previous methods that combined transfer-based and scored-based methods by using the gradient or initialization of a surrogate white-box model, this new method tries to learn a…

Machine Learning · Computer Science 2020-01-07 Zhichao Huang , Tong Zhang

Local Linear embedding (LLE) is a popular dimension reduction method. In this paper, we first show LLE with nonnegative constraint is equivalent to the widely used Laplacian embedding. We further propose to iterate the two steps in LLE…

Machine Learning · Computer Science 2012-07-03 Deguang Kong , Chris H. Q. Ding , Heng Huang , Feiping Nie

Pixel-wise losses, e.g., cross-entropy or L2, have been widely used in structured prediction tasks as a spatial extension of generic image classification or regression. However, its i.i.d. assumption neglects the structural regularity…

Computer Vision and Pattern Recognition · Computer Science 2019-10-22 Jyh-Jing Hwang , Tsung-Wei Ke , Jianbo Shi , Stella X. Yu

We introduce EnhanceGAN, an adversarial learning based model that performs automatic image enhancement. Traditional image enhancement frameworks typically involve training models in a fully-supervised manner, which require expensive…

Computer Vision and Pattern Recognition · Computer Science 2018-07-03 Yubin Deng , Chen Change Loy , Xiaoou Tang

More capable language models increasingly saturate existing task benchmarks, in some cases outperforming humans. This has left little headroom with which to measure further progress. Adversarial dataset creation has been proposed as a…

Computation and Language · Computer Science 2021-11-17 Jason Phang , Angelica Chen , William Huang , Samuel R. Bowman

A human's attention can intuitively adapt to corrupted areas of an image by recalling a similar uncorrupted image they have previously seen. This observation motivates us to improve the attention of adversarial images by considering their…

Computer Vision and Pattern Recognition · Computer Science 2022-01-05 Runqi Wang , Xiaoyue Duan , Baochang Zhang , Song Xue , Wentao Zhu , David Doermann , Guodong Guo

Adversarial examples (AEs) are images that can mislead deep neural network (DNN) classifiers via introducing slight perturbations into original images. This security vulnerability has led to vast research in recent years because it can…

Machine Learning · Computer Science 2020-12-25 Ruqi Bai , Saurabh Bagchi , David I. Inouye

Deep neural networks have shown their vulnerability to adversarial attacks. In this paper, we focus on sparse adversarial attack based on the $\ell_0$ norm constraint, which can succeed by only modifying a few pixels of an image. Despite a…

Computer Vision and Pattern Recognition · Computer Science 2021-06-01 Ziwen He , Wei Wang , Jing Dong , Tieniu Tan

State-of-the-art machine learning models can be vulnerable to very small input perturbations that are adversarially constructed. Adversarial training is an effective approach to defend against such examples. It is formulated as a min-max…

Machine Learning · Statistics 2022-10-21 Antônio H. Ribeiro , Dave Zachariah , Thomas B. Schön

Contrastive learning operates on a simple yet effective principle: Embeddings of positive pairs are pulled together, while those of negative pairs are pushed apart. In this paper, we propose a unified framework for understanding contrastive…

Machine Learning · Computer Science 2025-07-16 Chungpa Lee , Sehee Lim , Kibok Lee , Jy-yong Sohn

In this paper, we present a novel adversarial lossy video compression model. At extremely low bit-rates, standard video coding schemes suffer from unpleasant reconstruction artifacts such as blocking, ringing etc. Existing learned neural…

Image and Video Processing · Electrical Eng. & Systems 2021-06-22 Vijay Veerabadran , Reza Pourreza , Amirhossein Habibian , Taco Cohen

Due to their uncertainty quantification, Bayesian solutions to inverse problems are the framework of choice in applications that are risk averse. These benefits come at the cost of computations that are in general, intractable. New advances…

Machine Learning · Computer Science 2024-05-10 Rafael Orozco , Ali Siahkoohi , Mathias Louboutin , Felix J. Herrmann

Sparse system identification problems often exist in many applications, such as echo interference cancellation, sparse channel estimation, and adaptive beamforming. One of popular adaptive sparse system identification (ASSI) methods is…

Information Theory · Computer Science 2013-11-07 Guan Gui , Shinya Kumagai , Abolfazl Mehbodniya , Fumiyuki Adachi

Despite the recent advances in large-scale diffusion models, little progress has been made on the layout-to-image (L2I) synthesis task. Current L2I models either suffer from poor editability via text or weak alignment between the generated…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Yumeng Li , Margret Keuper , Dan Zhang , Anna Khoreva
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