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For anomaly detection (AD), early approaches often train separate models for individual classes, yielding high performance but posing challenges in scalability and resource management. Recent efforts have shifted toward training a single…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Lei Fan , Junjie Huang , Donglin Di , Anyang Su , Tianyou Song , Maurice Pagnucco , Yang Song

Contemporary deep clustering approaches often rely on either contrastive or non-contrastive techniques to acquire effective representations for clustering tasks. Contrastive methods leverage negative pairs to achieve homogenous…

Machine Learning · Computer Science 2023-11-03 Abhishek Kumar , Dong-Gyu Lee

Contrastive Learning (CL) performances as a rising approach to address the challenge of sparse and noisy recommendation data. Although having achieved promising results, most existing CL methods only perform either hand-crafted data or…

Information Retrieval · Computer Science 2023-11-22 Xiuyuan Qin , Huanhuan Yuan , Pengpeng Zhao , Junhua Fang , Fuzhen Zhuang , Guanfeng Liu , Victor Sheng

Deep clustering has shown its promising capability in joint representation learning and clustering via deep neural networks. Despite the significant progress, the existing deep clustering works mostly utilize some distribution-based…

Computer Vision and Pattern Recognition · Computer Science 2023-10-18 Yuankun Xu , Dong Huang , Chang-Dong Wang , Jian-Huang Lai

Learning scientific document representations can be substantially improved through contrastive learning objectives, where the challenge lies in creating positive and negative training samples that encode the desired similarity semantics.…

Computation and Language · Computer Science 2022-10-20 Malte Ostendorff , Nils Rethmeier , Isabelle Augenstein , Bela Gipp , Georg Rehm

Online class-incremental continual learning (CL) studies the problem of learning new classes continually from an online non-stationary data stream, intending to adapt to new data while mitigating catastrophic forgetting. While memory replay…

Machine Learning · Computer Science 2021-10-06 Zheda Mai , Ruiwen Li , Hyunwoo Kim , Scott Sanner

Cross-modal retrieval (CMR) typically involves learning common representations to directly measure similarities between multimodal samples. Most existing CMR methods commonly assume multimodal samples in pairs and employ joint training to…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Ruitao Pu , Yang Qin , Dezhong Peng , Xiaomin Song , Huiming Zheng

Place recognition is an essential and challenging task in loop closing and global localization for robotics and autonomous driving applications. Benefiting from the recent advances in deep learning techniques, the performance of LiDAR place…

Computer Vision and Pattern Recognition · Computer Science 2023-06-16 Jiafeng Cui , Xieyuanli Chen

Self-supervised contrastive learning (CL) effectively learns transferable representations from unlabeled data containing images or image-text pairs but suffers vulnerability to data poisoning backdoor attacks (DPCLs). An adversary can…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Tuo Chen , Jie Gui , Minjing Dong , Ju Jia , Lanting Fang , Jian Liu

Learning a deep model from small data is yet an opening and challenging problem. We focus on one-shot classification by deep learning approach based on a small quantity of training samples. We proposed a novel deep learning approach named…

Machine Learning · Computer Science 2018-02-13 Chuanyun Xu , Yang Zhang , Xin Feng , YongXing Ge , Yihao Zhang , Jianwu Long

Contrastive learning is widely used for recommendation model learning, where selecting representative and informative negative samples is critical. Existing methods usually focus on centralized data, where abundant and high-quality negative…

Machine Learning · Computer Science 2022-04-22 Chuhan Wu , Fangzhao Wu , Tao Qi , Yongfeng Huang , Xing Xie

While Contrastive Learning (CL) has revolutionized self-supervised representation learning, its latent representations remain highly entangled and opaque, limiting their interpretability in safety-critical applications. We identify that a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Peng Cui , Jiahao Zhang , Lijie Hu

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…

Machine Learning · Computer Science 2023-08-16 Huangjie Zheng , Xu Chen , Jiangchao Yao , Hongxia Yang , Chunyuan Li , Ya Zhang , Hao Zhang , Ivor Tsang , Jingren Zhou , Mingyuan Zhou

As a seminal tool in self-supervised representation learning, contrastive learning has gained unprecedented attention in recent years. In essence, contrastive learning aims to leverage pairs of positive and negative samples for…

Machine Learning · Computer Science 2022-02-01 Ching-Yun Ko , Jeet Mohapatra , Sijia Liu , Pin-Yu Chen , Luca Daniel , Lily Weng

In this work, we aim to consider the application of contrastive learning in the scenario of the recommendation system adequately, making it more suitable for recommendation task. We propose a learning paradigm called supervised contrastive…

Information Retrieval · Computer Science 2022-04-20 Chun Yang

One of the objectives of continual learning is to prevent catastrophic forgetting in learning multiple tasks sequentially, and the existing solutions have been driven by the conceptualization of the plasticity-stability dilemma. However,…

Machine Learning · Computer Science 2024-04-16 Seungyub Han , Yeongmo Kim , Taehyun Cho , Jungwoo Lee

In visual retrieval systems, updating the embedding model requires recomputing features for every piece of data. This expensive process is referred to as backfilling. Recently, the idea of backward compatible training (BCT) was proposed. To…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Vivek Ramanujan , Pavan Kumar Anasosalu Vasu , Ali Farhadi , Oncel Tuzel , Hadi Pouransari

Contrastive Language Image Pre-training (CLIP) has recently demonstrated success across various tasks due to superior feature representation empowered by image-text contrastive learning. However, the instance discrimination method used by…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Xiang An , Kaicheng Yang , Xiangzi Dai , Ziyong Feng , Jiankang Deng

Self-supervised learning (SSL) has recently achieved great success in mining the user-item interactions for collaborative filtering. As a major paradigm, contrastive learning (CL) based SSL helps address data sparsity in Web platforms by…

Information Retrieval · Computer Science 2024-02-20 Dan Zhang , Yangliao Geng , Wenwen Gong , Zhongang Qi , Zhiyu Chen , Xing Tang , Ying Shan , Yuxiao Dong , Jie Tang

In this paper, we propose a one-stage online clustering method called Contrastive Clustering (CC) which explicitly performs the instance- and cluster-level contrastive learning. To be specific, for a given dataset, the positive and negative…

Machine Learning · Computer Science 2020-09-22 Yunfan Li , Peng Hu , Zitao Liu , Dezhong Peng , Joey Tianyi Zhou , Xi Peng