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Contrastive learning (CL) is a popular technique for self-supervised learning (SSL) of visual representations. It uses pairs of augmentations of unlabeled training examples to define a classification task for pretext learning of a deep…

计算机视觉与模式识别 · 计算机科学 2020-10-26 Chih-Hui Ho , Nuno Vasconcelos

Self-Supervised Contrastive Learning has proven effective in deriving high-quality representations from unlabeled data. However, a major challenge that hinders both unimodal and multimodal contrastive learning is feature suppression, a…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Jihai Zhang , Xiang Lan , Xiaoye Qu , Yu Cheng , Mengling Feng , Bryan Hooi

Unsupervised anomaly detection aims to build models to effectively detect unseen anomalies by only training on the normal data. Although previous reconstruction-based methods have made fruitful progress, their generalization ability is…

机器学习 · 计算机科学 2022-01-04 Yuxin Zhang , Jindong Wang , Yiqiang Chen , Han Yu , Tao Qin

Makeup is widely used to improve facial attractiveness and is well accepted by the public. However, different makeup styles will result in significant facial appearance changes. It remains a challenging problem to match makeup and…

计算机视觉与模式识别 · 计算机科学 2017-11-23 Yi Li , Lingxiao Song , Xiang Wu , Ran He , Tieniu Tan

Anomaly detection aims at identifying deviant samples from the normal data distribution. Contrastive learning has provided a successful way to sample representation that enables effective discrimination on anomalies. However, when…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Gaoang Wang , Yibing Zhan , Xinchao Wang , Mingli Song , Klara Nahrstedt

Despite recent success, most contrastive self-supervised learning methods are domain-specific, relying heavily on data augmentation techniques that require knowledge about a particular domain, such as image cropping and rotation. To…

机器学习 · 计算机科学 2021-07-21 Vikas Verma , Minh-Thang Luong , Kenji Kawaguchi , Hieu Pham , Quoc V. Le

Adversarial attacks pose a critical security threat to real-world AI systems by injecting human-imperceptible perturbations into benign samples to induce misclassification in deep learning models. While existing detection methods, such as…

计算机视觉与模式识别 · 计算机科学 2025-04-02 Yinghe Zhang , Chi Liu , Shuai Zhou , Sheng Shen , Peng Gui

Adversarial Imitation Learning (AIL) allows the agent to reproduce expert behavior with low-dimensional states and actions. However, challenges arise in handling visual states due to their less distinguishable representation compared to…

机器学习 · 计算机科学 2024-01-23 Yunke Wang , Linwei Tao , Bo Du , Yutian Lin , Chang Xu

Standard contrastive learning approaches usually require a large number of negatives for effective unsupervised learning and often exhibit slow convergence. We suspect this behavior is due to the suboptimal selection of negatives used for…

机器学习 · 计算机科学 2021-12-22 Anshul Shah , Suvrit Sra , Rama Chellappa , Anoop Cherian

The tracking-by-detection framework consists of two stages, i.e., drawing samples around the target object in the first stage and classifying each sample as the target object or as background in the second stage. The performance of existing…

计算机视觉与模式识别 · 计算机科学 2018-04-13 Yibing Song , Chao Ma , Xiaohe Wu , Lijun Gong , Linchao Bao , Wangmeng Zuo , Chunhua Shen , Rynson Lau , Ming-Hsuan Yang

Analysis and modeling of the ventricles and myocardium are important in the diagnostic and treatment of heart diseases. Manual delineation of those tissues in cardiac MR (CMR) scans is laborious and time-consuming. The ambiguity of the…

图像与视频处理 · 电气工程与系统科学 2019-08-29 Jingkun Chen , Hongwei Li , Jianguo Zhang , Bjoern Menze

Convolutional neural networks (CNNs) have been demonstrated their powerful ability to extract discriminative features for hyperspectral image classification. However, general deep learning methods for CNNs ignore the influence of complex…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Zhiqiang Gong , Xian Zhou , Wen Yao

Graph contrastive learning (GCL) has become a central paradigm for self-supervised representation learning in computational intelligence, with applications spanning recommendation, anomaly detection, and personalization. A key limitation of…

机器学习 · 计算机科学 2026-05-06 Adnan Ali , Jinlong Li , Syed Muhammad Israr , Ali Kashif Bashir

Deep learning has been a prevalence in computational chemistry and widely implemented in molecule property predictions. Recently, self-supervised learning (SSL), especially contrastive learning (CL), gathers growing attention for the…

机器学习 · 计算机科学 2022-06-01 Yuyang Wang , Rishikesh Magar , Chen Liang , Amir Barati Farimani

Contrastive learning is a well-established paradigm in representation learning. The standard framework of contrastive learning minimizes the distance between "similar" instances and maximizes the distance between dissimilar ones in the…

机器学习 · 计算机科学 2025-02-06 Naghmeh Ghanooni , Barbod Pajoum , Harshit Rawal , Sophie Fellenz , Vo Nguyen Le Duy , Marius Kloft

We propose a framework of generative adversarial networks with multiple discriminators, which collaborate to represent a real dataset more effectively. Our approach facilitates learning a generator consistent with the underlying data…

机器学习 · 计算机科学 2024-04-04 Jinyoung Choi , Bohyung Han

While convolutional neural networks (CNNs) have achieved excellent performances in various computer vision tasks, they often misclassify with malicious samples, a.k.a. adversarial examples. Adversarial training is a popular and…

计算机视觉与模式识别 · 计算机科学 2023-02-17 Hiroki Adachi , Tsubasa Hirakawa , Takayoshi Yamashita , Hironobu Fujiyoshi , Yasunori Ishii , Kazuki Kozuka

Contrastive learning (CL) aims to learn useful representation without relying on expert annotations in the context of medical image segmentation. Existing approaches mainly contrast a single positive vector (i.e., an augmentation of the…

计算机视觉与模式识别 · 计算机科学 2022-03-08 Chenyu You , Ruihan Zhao , Lawrence Staib , James S. Duncan

Contrastive learning (CL) for Vision Transformers (ViTs) in image domains has achieved performance comparable to CL for traditional convolutional backbones. However, in 3D point cloud pretraining with ViTs, masked autoencoder (MAE) modeling…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Bin Ren , Guofeng Mei , Danda Pani Paudel , Weijie Wang , Yawei Li , Mengyuan Liu , Rita Cucchiara , Luc Van Gool , Nicu Sebe

In recent years, the rapid development of generative artificial intelligence technology has significantly lowered the barrier to creating high-quality fake images, posing a serious challenge to information authenticity and credibility.…

计算机视觉与模式识别 · 计算机科学 2026-04-15 Haifeng Zhang , Qinghui He , Xiuli Bi , Bo Liu , Chi-Man Pun , Bin Xiao