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Backward-compatible training circumvents the need for expensive updates to the old gallery database when deploying an advanced new model in the retrieval system. Previous methods achieved backward compatibility by aligning prototypes of the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yu Liang , Yufeng Zhang , Shiliang Zhang , Yaowei Wang , Sheng Xiao , Rong Xiao , Xiaoyu Wang

Contrastive Learning (CL) has been proved to be a powerful self-supervised approach for a wide range of domains, including computer vision and graph representation learning. However, the incremental learning issue of CL has rarely been…

Machine Learning · Computer Science 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

We propose Deep Companion Learning (DCL), a novel training method for Deep Neural Networks (DNNs) that enhances generalization by penalizing inconsistent model predictions compared to its historical performance. To achieve this, we train a…

Computer Vision and Pattern Recognition · Computer Science 2024-07-29 Ruizhao Zhu , Venkatesh Saligrama

Unsupervised person re-identification (ReID) aims to match a query image of a pedestrian to the images in gallery set without supervision labels. The most popular approaches to tackle unsupervised person ReID are usually performing a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-15 He Sun , Mingkun Li , Chun-Guang Li

This paper presents Prototypical Contrastive Learning (PCL), an unsupervised representation learning method that addresses the fundamental limitations of instance-wise contrastive learning. PCL not only learns low-level features for the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Junnan Li , Pan Zhou , Caiming Xiong , Steven C. H. Hoi

This paper is concerned with contrastive learning (CL) for low-level image restoration and enhancement tasks. We propose a new label-efficient learning paradigm based on residuals, residual contrastive learning (RCL), and derive an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Nanqing Dong , Matteo Maggioni , Yongxin Yang , Eduardo Pérez-Pellitero , Ales Leonardis , Steven McDonagh

Multi-view clustering has shown to be an effective method for analyzing underlying patterns in multi-view data. The performance of clustering can be improved by learning the consistency and complementarity between multi-view features,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Shihao Dong , Yuhui Zheng , Huiying Xu , Xinzhong Zhu

Noise ubiquitously exists in signals due to numerous factors including physical, electronic, and environmental effects. Traditional methods of symbolic regression, such as genetic programming or deep learning models, aim to find the most…

Machine Learning · Computer Science 2024-06-24 Jingyi Liu , Yanjie Li , Lina Yu , Min Wu , Weijun Li , Wenqiang Li , Meilan Hao , Yusong Deng , Shu Wei

Subspace clustering aims to group data points that lie in a union of low-dimensional subspaces and finds wide application in computer vision, hyperspectral imaging, and recommendation systems. However, most existing methods assume fully…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Huanran Li , Daniel Pimentel-Alarcón

The joint hyperspectral image (HSI) and LiDAR data classification aims to interpret ground objects at more detailed and precise level. Although deep learning methods have shown remarkable success in the multisource data classification task,…

Image and Video Processing · Electrical Eng. & Systems 2023-02-08 Meng Wang , Feng Gao , Junyu Dong , Heng-Chao Li , Qian Du

At present, backdoor attacks attract attention as they do great harm to deep learning models. The adversary poisons the training data making the model being injected with a backdoor after being trained unconsciously by victims using the…

Cryptography and Security · Computer Science 2023-03-06 Shengfang Zhai , Qingni Shen , Xiaoyi Chen , Weilong Wang , Cong Li , Yuejian Fang , Zhonghai Wu

Contrastive learning is an efficient approach to self-supervised representation learning. Although recent studies have made progress in the theoretical understanding of contrastive learning, the investigation of how to characterize the…

Machine Learning · Computer Science 2023-08-21 Hiroki Waida , Yuichiro Wada , Léo Andéol , Takumi Nakagawa , Yuhui Zhang , Takafumi Kanamori

Recently, self-supervised methods show remarkable achievements in image-level representation learning. Nevertheless, their image-level self-supervisions lead the learned representation to sub-optimal for dense prediction tasks, such as…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Yunsung Lee , Teakgyu Hong , Han-Cheol Cho , Junbum Cha , Seungryong Kim

Current sequential recommender systems are proposed to tackle the dynamic user preference learning with various neural techniques, such as Transformer and Graph Neural Networks (GNNs). However, inference from the highly sparse user behavior…

Information Retrieval · Computer Science 2023-03-22 Yuhao Yang , Chao Huang , Lianghao Xia , Chunzhen Huang , Da Luo , Kangyi Lin

Recently, cluster contrastive learning has been proven effective for object ReID by computing the contrastive loss between the individual features and the cluster memory. However, existing methods that use the individual features to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Hantao Yao , Changsheng Xu

We present Cycle-Contrastive Learning (CCL), a novel self-supervised method for learning video representation. Following a nature that there is a belong and inclusion relation of video and its frames, CCL is designed to find correspondences…

Computer Vision and Pattern Recognition · Computer Science 2020-10-29 Quan Kong , Wenpeng Wei , Ziwei Deng , Tomoaki Yoshinaga , Tomokazu Murakami

Contrastive self-supervised learning (CSL) with a prototypical regularization has been introduced in learning meaningful representations for downstream tasks that require strong semantic information. However, to optimize CSL with a loss…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Shentong Mo , Zhun Sun , Chao Li

Cross-modal contrastive learning has led the recent advances in multimodal retrieval with its simplicity and effectiveness. In this work, however, we reveal that cross-modal contrastive learning suffers from incorrect normalization of the…

Information Retrieval · Computer Science 2022-12-23 Yookoon Park , Mahmoud Azab , Bo Xiong , Seungwhan Moon , Florian Metze , Gourab Kundu , Kirmani Ahmed

Embeddings, low-dimensional vector representation of objects, are fundamental in building modern machine learning systems. In industrial settings, there is usually an embedding team that trains an embedding model to solve intended tasks…

Machine Learning · Statistics 2022-06-08 Weihua Hu , Rajas Bansal , Kaidi Cao , Nikhil Rao , Karthik Subbian , Jure Leskovec

Collaborative learning enables distributed clients to learn a shared model for prediction while keeping the training data local on each client. However, existing collaborative learning methods require fully-labeled data for training, which…

Machine Learning · Computer Science 2022-04-26 Yawen Wu , Zhepeng Wang , Dewen Zeng , Meng Li , Yiyu Shi , Jingtong Hu