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Traditional supervised learning methods are hitting a bottleneck because of their dependency on expensive manually labeled data and their weaknesses such as limited generalization ability and vulnerability to adversarial attacks. A…

机器学习 · 计算机科学 2021-06-08 Ran Liu

ImageNet Large Scale Visual Recognition Challenge (ILSVRC) is one of the most authoritative academic competitions in the field of Computer Vision (CV) in recent years. But applying ILSVRC's annual champion directly to fine-grained visual…

计算机视觉与模式识别 · 计算机科学 2020-07-22 Fan Zhang , Meng Li , Guisheng Zhai , Yizhao Liu

We present a novel deep convolutional neural network (DCNN) system for fine-grained image classification, called a mixture of DCNNs (MixDCNN). The fine-grained image classification problem is characterised by large intra-class variations…

计算机视觉与模式识别 · 计算机科学 2015-12-01 ZongYuan Ge , Alex Bewley , Christopher McCool , Ben Upcroft , Peter Corke , Conrad Sanderson

Fine-grained image classification (FGIC) is a challenging task in computer vision for due to small visual differences among inter-subcategories, but, large intra-class variations. Deep learning methods have achieved remarkable success in…

计算机视觉与模式识别 · 计算机科学 2024-04-02 Asish Bera , Debotosh Bhattacharjee , Mita Nasipuri

Among different existing graph self-supervised learning strategies, graph contrastive learning (GCL) has been one of the most prevalent approaches to this problem. Despite the remarkable performance those GCL methods have achieved, existing…

机器学习 · 计算机科学 2022-10-27 Qianlong Wen , Zhongyu Ouyang , Chunhui Zhang , Yiyue Qian , Yanfang Ye , Chuxu Zhang

Recently, several Vision Transformer (ViT) based methods have been proposed for Fine-Grained Visual Classification (FGVC).These methods significantly surpass existing CNN-based ones, demonstrating the effectiveness of ViT in FGVC…

计算机视觉与模式识别 · 计算机科学 2022-03-25 Zi-Chao Zhang , Zhen-Duo Chen , Yongxin Wang , Xin Luo , Xin-Shun Xu

While semi-supervised learning (SSL) has yielded promising results, the more realistic SSL scenario remains to be explored, in which the unlabeled data exhibits extremely high recognition difficulty, e.g., fine-grained visual classification…

机器学习 · 计算机科学 2023-12-20 Yue Duan , Zhen Zhao , Lei Qi , Luping Zhou , Lei Wang , Yinghuan Shi

Learning fine-grained details is a key issue in image aesthetic assessment. Most of the previous methods extract the fine-grained details via random cropping strategy, which may undermine the integrity of semantic information. Extensive…

计算机视觉与模式识别 · 计算机科学 2019-06-27 Xiaodan Zhang , Xinbo Gao , Wen Lu , Lihuo He

We propose a realistic scenario for the unsupervised video learning where neither task boundaries nor labels are provided when learning a succession of tasks. We also provide a non-parametric learning solution for the under-explored problem…

计算机视觉与模式识别 · 计算机科学 2025-09-01 Nattapong Kurpukdee , Adrian G. Bors

Vehicle re-identification (Vehicle ReID) aims at retrieving vehicle images across disjoint surveillance camera views. The majority of vehicle ReID research is heavily reliant upon supervisory labels from specific human-collected datasets…

计算机视觉与模式识别 · 计算机科学 2024-10-30 Zhigang Chang , Shibao Zheng

This paper presents a new hybrid learning algorithm for unsupervised classification tasks. We combined Fuzzy c-means learning algorithm and a supervised version of Minimerror to develop a hybrid incremental strategy allowing unsupervised…

机器学习 · 计算机科学 2009-05-15 Juan-Manuel Torres-Moreno , Laurent Bougrain , Frdéric Alexandre

Contrastive learning has shown outstanding performances in both supervised and unsupervised learning, and has recently been introduced to solve weakly supervised learning problems such as semi-supervised learning and noisy label learning.…

机器学习 · 计算机科学 2023-06-08 Jingyi Cui , Weiran Huang , Yifei Wang , Yisen Wang

Effective feature selection is essential for high-dimensional data analysis and machine learning. Unsupervised feature selection (UFS) aims to simultaneously cluster data and identify the most discriminative features. Most existing UFS…

机器学习 · 统计学 2026-03-23 Feng Yu , MD Saifur Rahman Mazumder , Ying Su , Oscar Contreras Velasco

Unsupervised approaches to learning in neural networks are of substantial interest for furthering artificial intelligence, both because they would enable the training of networks without the need for large numbers of expensive annotations,…

计算机视觉与模式识别 · 计算机科学 2019-04-11 Chengxu Zhuang , Alex Lin Zhai , Daniel Yamins

The unsupervised segmentation is an increasingly popular topic in biomedical image analysis. The basic idea is to approach the supervised segmentation task as an unsupervised synthesis problem, where the intensity images can be transferred…

计算机视觉与模式识别 · 计算机科学 2020-10-23 Quan Liu , Isabella M. Gaeta , Bryan A. Millis , Matthew J. Tyska , Yuankai Huo

Learning discriminative representations of unlabelled data is a challenging task. Contrastive self-supervised learning provides a framework to learn meaningful representations using learned notions of similarity measures from simple pretext…

计算机视觉与模式识别 · 计算机科学 2023-01-04 Nicklas Boserup , Raghavendra Selvan

Estimating correspondences between pairs of non-rigid deformable 3D shapes remains a significant challenge in computer vision and graphics. While deep functional map methods have become the go-to solution for addressing this problem, they…

计算机视觉与模式识别 · 计算机科学 2026-03-20 Feifan Luo , Hongyang Chen

Fine-grained object classification is a challenging task due to the subtle inter-class difference and large intra-class variation. Recently, visual attention models have been applied to automatically localize the discriminative regions of…

计算机视觉与模式识别 · 计算机科学 2018-02-27 Bo Zhao , Xiao Wu , Jiashi Feng , Qiang Peng , Shuicheng Yan

Recently, contrastive learning (CL) plays an important role in exploring complementary information for multi-view clustering (MVC) and has attracted increasing attention. Nevertheless, real-world multi-view data suffer from data…

机器学习 · 计算机科学 2025-12-29 Hongqing He , Jie Xu , Wenyuan Yang , Yonghua Zhu , Guoqiu Wen , Xiaofeng Zhu

Pretext Invariant Representation Learning (PIRL) followed by Supervised Fine-Tuning (SFT) has become a standard paradigm for learning with limited labels. We extend this approach to the Positive Unlabeled (PU) setting, where only a small…

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