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Contrastive learning (CL) methods effectively learn data representations in a self-supervision manner, where the encoder contrasts each positive sample over multiple negative samples via a one-vs-many softmax cross-entropy loss. By…

Contrastive learning has moved the state of the art for many tasks in computer vision and information retrieval in recent years. This poster is the first work that applies supervised contrastive learning to the task of product matching in…

机器学习 · 计算机科学 2022-05-03 Ralph Peeters , Christian Bizer

To facilitate the re-identification (re-ID) of individual animals, existing methods primarily focus on maximizing feature similarity within the same individual and enhancing distinctiveness between different individuals. However, most of…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Jincheng Zhang , Qijun Zhao , Tie Liu

Meta-learning enables learning systems to adapt quickly to new tasks, similar to humans. Different meta-learning approaches all work under/with the mini-batch episodic training framework. Such framework naturally gives the information about…

机器学习 · 计算机科学 2025-11-10 Shiguang Wu , Yaqing Wang , Yatao Bian , Quanming Yao

Unsupervised visible-infrared person re-identification (USL-VI-ReID) aims to match pedestrian images of the same identity from different modalities without annotations. Existing works mainly focus on alleviating the modality gap by aligning…

计算机视觉与模式识别 · 计算机科学 2024-11-05 De Cheng , Lingfeng He , Nannan Wang , Shizhou Zhang , Zhen Wang , Xinbo Gao

Recently, vehicle re-identification methods based on deep learning constitute remarkable achievement. However, this achievement requires large-scale and well-annotated datasets. In constructing the dataset, assigning globally available…

计算机视觉与模式识别 · 计算机科学 2021-09-15 Jongmin Yu , Junsik Kim , Minkyung Kim , Hyeontaek Oh

Unsupervised domain adaptive (UDA) person re-identification (re-ID) is a challenging task due to the missing of labels for the target domain data. To handle this problem, some recent works adopt clustering algorithms to off-line generate…

计算机视觉与模式识别 · 计算机科学 2021-09-29 Yongxing Dai , Jun Liu , Yan Bai , Zekun Tong , Ling-Yu Duan

Previous feature alignment methods in Unsupervised domain adaptation(UDA) mostly only align global features without considering the mismatch between class-wise features. In this work, we propose a new coarse-to-fine feature alignment method…

计算机视觉与模式识别 · 计算机科学 2021-03-24 Shiyu Tang , Peijun Tang , Yanxiang Gong , Zheng Ma , Mei Xie

In object re-identification (ReID), the development of deep learning techniques often involves model updates and deployment. It is unbearable to re-embedding and re-index with the system suspended when deploying new models. Therefore,…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Shengsen Wu , Liang Chen , Yihang Lou , Yan Bai , Tao Bai , Minghua Deng , Lingyu Duan

Cluster assignment of large and complex images is a crucial but challenging task in pattern recognition and computer vision. In this study, we explore the possibility of employing fuzzy clustering in a deep neural network framework. Thus,…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Dayu Tan , Zheng Huang , Xin Peng , Weimin Zhong , Vladimir Mahalec

This paper proposes the ViT Token Constraint and Multi-scale Memory bank (TCMM) method to address the patch noises and feature inconsistency in unsupervised person re-identification works. Many excellent methods use ViT features to obtain…

计算机视觉与模式识别 · 计算机科学 2025-01-17 Zheng-An Zhu , Hsin-Che Chien , Chen-Kuo Chiang

The Adversarially Learned Mixture Model (AMM) is a generative model for unsupervised or semi-supervised data clustering. The AMM is the first adversarially optimized method to model the conditional dependence between inferred continuous and…

In this work, we study Unsupervised Domain Adaptation (UDA) in a challenging self-supervised approach. One of the difficulties is how to learn task discrimination in the absence of target labels. Unlike previous literature which directly…

计算与语言 · 计算机科学 2022-07-12 Quanyu Long , Tianze Luo , Wenya Wang , Sinno Jialin Pan

How can you sample good negative examples for contrastive learning? We argue that, as with metric learning, contrastive learning of representations benefits from hard negative samples (i.e., points that are difficult to distinguish from an…

机器学习 · 计算机科学 2021-01-26 Joshua Robinson , Ching-Yao Chuang , Suvrit Sra , Stefanie Jegelka

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

Recently, contrastive learning has risen to be a promising approach for large-scale self-supervised learning. However, theoretical understanding of how it works is still unclear. In this paper, we propose a new guarantee on the downstream…

机器学习 · 计算机科学 2022-05-30 Yifei Wang , Qi Zhang , Yisen Wang , Jiansheng Yang , Zhouchen Lin

This paper tackles the purely unsupervised person re-identification (Re-ID) problem that requires no annotations. Some previous methods adopt clustering techniques to generate pseudo labels and use the produced labels to train Re-ID models…

计算机视觉与模式识别 · 计算机科学 2021-02-08 Menglin Wang , Baisheng Lai , Jianqiang Huang , Xiaojin Gong , Xian-Sheng Hua

Decentralized learning recently has received increasing attention in machine learning due to its advantages in implementation simplicity and system robustness, data privacy. Meanwhile, the adaptive gradient methods show superior…

机器学习 · 计算机科学 2024-08-20 Feihu Huang , Jianyu Zhao

Contrastive learning has gained significant attention in short text clustering, yet it has an inherent drawback of mistakenly identifying samples from the same category as negatives and then separating them in the feature space (false…

机器学习 · 计算机科学 2026-03-16 Zhihao Yao

Contrastive Learning first extracts features from unlabeled data, followed by linear probing with labeled data. Adversarial Contrastive Learning (ACL) integrates Adversarial Training into the first phase to enhance feature robustness…

机器学习 · 计算机科学 2025-10-28 Ngoc N. Tran , Lam Tran , Hoang Phan , Anh Bui , Tung Pham , Toan Tran , Dinh Phung , Trung Le