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Despite their outstanding accuracy, semi-supervised segmentation methods based on deep neural networks can still yield predictions that are considered anatomically impossible by clinicians, for instance, containing holes or disconnected…

Computer Vision and Pattern Recognition · Computer Science 2021-07-14 Ping Wang , Jizong Peng , Marco Pedersoli , Yuanfeng Zhou , Caiming Zhang , Christian Desrosiers

Meta-learning model can quickly adapt to new tasks using few-shot labeled data. However, despite achieving good generalization on few-shot classification tasks, it is still challenging to improve the adversarial robustness of the…

Machine Learning · Computer Science 2021-07-02 Fan Liu , Shuyu Zhao , Xuelong Dai , Bin Xiao

Adversarial training can improve the robustness of neural networks. Previous methods focus on a single adversarial training strategy and do not consider the model property trained by different strategies. By revisiting the previous methods,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Xingbin Liu , Huafeng Kuang , Xianming Lin , Yongjian Wu , Rongrong Ji

Recently, deep learning has been applied to many security-sensitive applications, such as facial authentication. The existence of adversarial examples hinders such applications. The state-of-the-art result on defense shows that adversarial…

Machine Learning · Computer Science 2018-05-15 Qi-Zhi Cai , Min Du , Chang Liu , Dawn Song

Adversarial training (AT) as a regularization method has proved its effectiveness on various tasks. Though there are successful applications of AT on some NLP tasks, the distinguishing characteristics of NLP tasks have not been exploited.…

Computation and Language · Computer Science 2021-11-29 Ziqing Yang , Yiming Cui , Chenglei Si , Wanxiang Che , Ting Liu , Shijin Wang , Guoping Hu

The majority of adversarial machine learning research focuses on additive attacks, which add adversarial perturbation to input data. On the other hand, unlike image recognition problems, only a handful of attack approaches have been…

Machine Learning · Computer Science 2021-10-12 Shao-Yuan Lo , Vishal M. Patel

Due to the numerous potential applications in visual surveillance and nighttime driving, recognizing human action in low-light conditions remains a difficult problem in computer vision. Existing methods separate action recognition and dark…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Anwaar Ulhaq

Temporal modeling is crucial for various video learning tasks. Most recent approaches employ either factorized (2D+1D) or joint (3D) spatial-temporal operations to extract temporal contexts from the input frames. While the former is more…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Yizhou Zhao , Zhenyang Li , Xun Guo , Yan Lu

(T)ACSA tasks, including aspect-category sentiment analysis (ACSA) and targeted aspect-category sentiment analysis (TACSA), aims at identifying sentiment polarity on predefined categories. Incremental learning on new categories is necessary…

Computation and Language · Computer Science 2020-10-07 Zehui Dai , Cheng Peng , Huajie Chen , Yadong Ding

While deep neural networks (DNNs) achieve impressive performance on environment perception tasks, their sensitivity to adversarial perturbations limits their use in practical applications. In this paper, we (i) propose a novel adversarial…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Marvin Klingner , Varun Ravi Kumar , Senthil Yogamani , Andreas Bär , Tim Fingscheidt

Human beings are able to master a variety of knowledge and skills with ongoing learning. By contrast, dramatic performance degradation is observed when new tasks are added to an existing neural network model. This phenomenon, termed as…

Machine Learning · Computer Science 2019-10-25 Xin Yao , Tianchi Huang , Chenglei Wu , Rui-Xiao Zhang , Lifeng Sun

Recent works have demonstrated convolutional neural networks are vulnerable to adversarial examples, i.e., inputs to machine learning models that an attacker has intentionally designed to cause the models to make a mistake. To improve the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Xianxu Hou , Jingxin Liu , Bolei Xu , Xiaolong Wang , Bozhi Liu , Guoping Qiu

To benefit the learning of a new task, meta-learning has been proposed to transfer a well-generalized meta-model learned from various meta-training tasks. Existing meta-learning algorithms randomly sample meta-training tasks with a uniform…

Machine Learning · Computer Science 2021-10-28 Huaxiu Yao , Yu Wang , Ying Wei , Peilin Zhao , Mehrdad Mahdavi , Defu Lian , Chelsea Finn

We propose a novel unsupervised approach based on a two-stage object-centric adversarial framework that only needs object regions for detecting frame-level local anomalies in videos. The first stage consists in learning the correspondence…

Computer Vision and Pattern Recognition · Computer Science 2020-11-16 Pankaj Raj Roy , Guillaume-Alexandre Bilodeau , Lama Seoud

In recent years, visual tracking methods based on convolutional neural networks and Transformers have achieved remarkable performance and have been successfully applied in fields such as autonomous driving. However, the numerous security…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 Wei-Long Tian , Peng Gao , Xiao Liu , Long Xu , Hamido Fujita , Hanan Aljuai , Mao-Li Wang

Adversarial training has been proven to be an effective technique for improving the adversarial robustness of models. However, there seems to be an inherent trade-off between optimizing the model for accuracy and robustness. To this end, we…

Computer Vision and Pattern Recognition · Computer Science 2020-08-20 Elahe Arani , Fahad Sarfraz , Bahram Zonooz

Vision-language models (VLMs) have shown remarkable ability in aligning visual and textual representations, enabling a wide range of multimodal applications. However, their large-scale training data inevitably raises concerns about privacy,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Shen Lin , Junhao Dong , Rongjie Chen , Xiaoyu Zhang , Li Xu , Xiaofeng Chen

Visual recognition models are not invariant to viewpoint changes in the 3D world, as different viewing directions can dramatically affect the predictions given the same object. Although many efforts have been devoted to making neural…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Shouwei Ruan , Yinpeng Dong , Hang Su , Jianteng Peng , Ning Chen , Xingxing Wei

Adversarial training enhances the robustness of Machine Learning (ML) models against adversarial attacks. However, obtaining labeled training and adversarial training data in network/cybersecurity domains is challenging and costly.…

Machine Learning · Computer Science 2024-05-30 Mohamed elShehaby , Aditya Kotha , Ashraf Matrawy

Aspect-Based Sentiment Analysis (ABSA) deals with the extraction of sentiments and their targets. Collecting labeled data for this task in order to help neural networks generalize better can be laborious and time-consuming. As an…

Machine Learning · Computer Science 2020-10-26 Akbar Karimi , Leonardo Rossi , Andrea Prati