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Sequential recommendation has become increasingly prominent in both academia and industry, particularly in e-commerce. The primary goal is to extract user preferences from historical interaction sequences and predict items a user is likely…

Information Retrieval · Computer Science 2026-04-16 Xiaofan Zhou , Kyumin Lee

Self-supervised learning methods based on data augmentations, such as SimCLR, BYOL, or DINO, allow obtaining semantically meaningful representations of image datasets and are widely used prior to supervised fine-tuning. A recent…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Ifeoma Veronica Nwabufo , Jan Niklas Böhm , Philipp Berens , Dmitry Kobak

Self-supervised learning methods can be used to learn meaningful representations from unlabeled data that can be transferred to supervised downstream tasks to reduce the need for labeled data. In this paper, we propose a 3D self-supervised…

Machine Learning · Computer Science 2021-10-04 Yamen Ali , Aiham Taleb , Marina M. -C. Höhne , Christoph Lippert

Tremendous breakthroughs have been developed in Semi-Supervised Semantic Segmentation (S4) through contrastive learning. However, due to limited annotations, the guidance on unlabeled images is generated by the model itself, which…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Haoyu Xie , Changqi Wang , Jian Zhao , Yang Liu , Jun Dan , Chong Fu , Baigui Sun

String representation Learning (SRL) is an important task in the field of Natural Language Processing, but it remains under-explored. The goal of SRL is to learn dense and low-dimensional vectors (or embeddings) for encoding character…

Computation and Language · Computer Science 2021-12-22 Urchade Zaratiana

Self-supervised topological deep learning (TDL) represents a nascent but underexplored area with significant potential for modeling higher-order interactions in simplicial complexes and cellular complexes to derive representations of…

Machine Learning · Computer Science 2025-05-29 Bin Qin , Qirui Ji , Jiangmeng Li , Yupeng Wang , Xuesong Wu , Jianwen Cao , Fanjiang Xu

E-commerce platforms generate vast amounts of customer behavior data, such as clicks and purchases, from millions of unique users every day. However, effectively using this data for behavior understanding tasks is challenging because there…

Machine Learning · Computer Science 2022-02-16 Tianyu Li , Ali Cevahir , Derek Cho , Hao Gong , DuyKhuong Nguyen , Bjorn Stenger

Social recommendations utilize social relations to enhance the representation learning for recommendations. Most social recommendation models unify user representations for the user-item interactions (collaborative domain) and social…

Information Retrieval · Computer Science 2023-10-04 Jiahao Wu , Wenqi Fan , Jingfan Chen , Shengcai Liu , Qing Li , Ke Tang

User modeling is critical for developing personalized services in industry. A common way for user modeling is to learn user representations that can be distinguished by their interests or preferences. In this work, we focus on developing…

Machine Learning · Computer Science 2020-12-14 Jie Gu , Feng Wang , Qinghui Sun , Zhiquan Ye , Xiaoxiao Xu , Jingmin Chen , Jun Zhang

Accurately modeling users' evolving preferences from sequential interactions remains a central challenge in recommender systems. Recent studies emphasize the importance of capturing multiple latent intents underlying user behaviors.…

Information Retrieval · Computer Science 2026-04-21 Shanfan Zhang , Yongyi Lin , Yuan Rao

Unsupervised pre-training has shown great success in skeleton-based action understanding recently. Existing works typically train separate modality-specific models, then integrate the multi-modal information for action understanding by a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Shengkai Sun , Daizong Liu , Jianfeng Dong , Xiaoye Qu , Junyu Gao , Xun Yang , Xun Wang , Meng Wang

User representation is essential for providing high-quality commercial services in industry. Universal user representation has received many interests recently, with which we can be free from the cumbersome work of training a specific model…

Machine Learning · Computer Science 2021-11-15 Qinghui Sun , Jie Gu , Bei Yang , XiaoXiao Xu , Renjun Xu , Shangde Gao , Hong Liu , Huan Xu

Unsupervised cell type identification is crucial for uncovering and characterizing heterogeneous populations in single cell omics studies. Although a range of clustering methods have been developed, most focus exclusively on intrinsic…

Artificial Intelligence · Computer Science 2025-12-12 Liang Peng , Haopeng Liu , Yixuan Ye , Cheng Liu , Wenjun Shen , Si Wu , Hau-San Wong

Deep learning models have recently become popular for detecting malicious user activity sessions in computing platforms. In many real-world scenarios, only a few labeled malicious and a large amount of normal sessions are available. These…

Cryptography and Security · Computer Science 2023-08-22 Vinay M. S. , Shuhan Yuan , Xintao Wu

Semi-supervised learning utilizes insights from unlabeled data to improve model generalization, thereby reducing reliance on large labeled datasets. Most existing studies focus on limited samples and fail to capture the overall data…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Xiuzhen Guo , Lianyuan Yu , Ji Shi , Na Lei , Hongxiao Wang

In semi-supervised learning, the paradigm of self-training refers to the idea of learning from pseudo-labels suggested by the learner itself. Across various domains, corresponding methods have proven effective and achieve state-of-the-art…

Machine Learning · Statistics 2023-06-12 Julian Lienen , Caglar Demir , Eyke Hüllermeier

Online recommender systems (RS) aim to match user needs with the vast amount of resources available on various platforms. A key challenge is to model user preferences accurately under the condition of data sparsity. To address this…

Information Retrieval · Computer Science 2023-09-20 Ning Wu , Ming Gong , Linjun Shou , Jian Pei , Daxin Jiang

Deep learning in general domains has constantly been extended to domain-specific tasks requiring the recognition of fine-grained characteristics. However, real-world applications for fine-grained tasks suffer from two challenges: a high…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Sungnyun Kim , Sangmin Bae , Se-Young Yun

Contrastive learning has shown effectiveness in improving sequential recommendation models. However, existing methods still face challenges in generating high-quality contrastive pairs: they either rely on random perturbations that corrupt…

Information Retrieval · Computer Science 2025-12-23 Ziqiang Cui , Yunpeng Weng , Xing Tang , Xiaokun Zhang , Shiwei Li , Peiyang Liu , Bowei He , Dugang Liu , Weihong Luo , Xiuqiang He , Chen Ma

Self-supervised learning has been widely used to obtain transferrable representations from unlabeled images. Especially, recent contrastive learning methods have shown impressive performances on downstream image classification tasks. While…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Byungseok Roh , Wuhyun Shin , Ildoo Kim , Sungwoong Kim