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In order to develop effective sequential recommenders, a series of sequence representation learning (SRL) methods are proposed to model historical user behaviors. Most existing SRL methods rely on explicit item IDs for developing the…

信息检索 · 计算机科学 2022-06-14 Yupeng Hou , Shanlei Mu , Wayne Xin Zhao , Yaliang Li , Bolin Ding , Ji-Rong Wen

Self-supervised Learning (SSL) including the mainstream contrastive learning has achieved great success in learning visual representations without data annotations. However, most of methods mainly focus on the instance level information…

计算机视觉与模式识别 · 计算机科学 2021-07-26 Mingkai Zheng , Shan You , Fei Wang , Chen Qian , Changshui Zhang , Xiaogang Wang , Chang Xu

Contrastive learning has nearly closed the gap between supervised and self-supervised learning of image representations, and has also been explored for videos. However, prior work on contrastive learning for video data has not explored the…

计算机视觉与模式识别 · 计算机科学 2022-03-31 Ishan Dave , Rohit Gupta , Mamshad Nayeem Rizve , Mubarak Shah

The representation learning problem in the oil & gas industry aims to construct a model that provides a representation based on logging data for a well interval. Previous attempts are mainly supervised and focus on similarity task, which…

人工智能 · 计算机科学 2023-11-14 Alexander Marusov , Alexey Zaytsev

Graph contrastive learning (GCL) has recently emerged as an effective learning paradigm to alleviate the reliance on labelling information for graph representation learning. The core of GCL is to maximise the mutual information between the…

机器学习 · 计算机科学 2022-10-18 Yizhen Zheng , Yu Zheng , Xiaofei Zhou , Chen Gong , Vincent CS Lee , Shirui Pan

Self-supervised learning (SSL) is a method that learns the data representation by utilizing supervision inherent in the data. This learning method is in the spotlight in the drug field, lacking annotated data due to time-consuming and…

生物大分子 · 定量生物学 2022-08-19 Kisung Moon , Sunyoung Kwon

The goal of unsupervised representation learning is to extract a new representation of data, such that solving many different tasks becomes easier. Existing methods typically focus on vectorized data and offer little support for relational…

机器学习 · 统计学 2017-09-29 Sebastijan Dumancic , Hendrik Blockeel

Unsupervised learning is a challenging task due to the lack of labels. Multiple Object Tracking (MOT), which inevitably suffers from mutual object interference, occlusion, etc., is even more difficult without label supervision. In this…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Sha Meng , Dian Shao , Jiacheng Guo , Shan Gao

Modern self-supervised learning algorithms typically enforce persistency of instance representations across views. While being very effective on learning holistic image and video representations, such an objective becomes sub-optimal for…

计算机视觉与模式识别 · 计算机科学 2022-04-05 Liangzhe Yuan , Rui Qian , Yin Cui , Boqing Gong , Florian Schroff , Ming-Hsuan Yang , Hartwig Adam , Ting Liu

Decentralized learning has been advocated and widely deployed to make efficient use of distributed datasets, with an extensive focus on supervised learning (SL) problems. Unfortunately, the majority of real-world data are unlabeled and can…

机器学习 · 计算机科学 2023-03-01 Lirui Wang , Kaiqing Zhang , Yunzhu Li , Yonglong Tian , Russ Tedrake

This paper presents CLaSP, a novel model for retrieving time-series signals using natural language queries that describe signal characteristics. The ability to search time-series signals based on descriptive queries is essential in domains…

计算与语言 · 计算机科学 2025-08-07 Aoi Ito , Kota Dohi , Yohei Kawaguchi

A good clustering algorithm can discover natural groupings in data. These groupings, if used wisely, provide a form of weak supervision for learning representations. In this work, we present Clustering-based Contrastive Learning (CCL), a…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Vivek Sharma , Makarand Tapaswi , M. Saquib Sarfraz , Rainer Stiefelhagen

Self-supervised learning (SSL) methods have shown promise for medical imaging applications by learning meaningful visual representations, even when the amount of labeled data is limited. Here, we extend state-of-the-art contrastive learning…

Graph Contrastive Learning (GCL) has recently drawn much research interest for learning generalizable node representations in a self-supervised manner. In general, the contrastive learning process in GCL is performed on top of the…

机器学习 · 计算机科学 2022-12-06 Kaize Ding , Yancheng Wang , Yingzhen Yang , Huan Liu

Multivariate time-series data in numerous real-world applications (e.g., healthcare and industry) are informative but challenging due to the lack of labels and high dimensionality. Recent studies in self-supervised learning have shown their…

机器学习 · 计算机科学 2024-07-18 Ching Chang , Chiao-Tung Chan , Wei-Yao Wang , Wen-Chih Peng , Tien-Fu Chen

Time series self-supervised learning (SSL) aims to exploit unlabeled data for pre-training to mitigate the reliance on labels. Despite the great success in recent years, there is limited discussion on the potential noise in the time series,…

机器学习 · 计算机科学 2024-06-10 Shuang Zhou , Daochen Zha , Xiao Shen , Xiao Huang , Rui Zhang , Fu-Lai Chung

While unsupervised change detection using contrastive learning has been significantly improved the performance of literature techniques, at present, it only focuses on the bi-temporal change detection scenario. Previous state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Yuxing Chen , Lorenzo Bruzzone

Unsupervised clustering aims at discovering the semantic categories of data according to some distance measured in the representation space. However, different categories often overlap with each other in the representation space at the…

The abundance of user-generated data in social media has incentivized the development of methods to infer the latent attributes of users, which are crucially useful for personalization, advertising and recommendation. However, the current…

社会与信息网络 · 计算机科学 2016-06-27 Richard J. Oentaryo , Ee-Peng Lim , Freddy Chong Tat Chua , Jia-Wei Low , David Lo

Graph Contrastive Learning (GCL) is a widely adopted approach in self-supervised graph representation learning, applying contrastive objectives to produce effective representations. However, current GCL methods primarily focus on capturing…

机器学习 · 计算机科学 2025-07-11 Dongxiao He , Yongqi Huang , Jitao Zhao , Xiaobao Wang , Zhen Wang