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This paper presents a simple yet effective framework MaskCLIP, which incorporates a newly proposed masked self-distillation into contrastive language-image pretraining. The core idea of masked self-distillation is to distill representation…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Xiaoyi Dong , Jianmin Bao , Yinglin Zheng , Ting Zhang , Dongdong Chen , Hao Yang , Ming Zeng , Weiming Zhang , Lu Yuan , Dong Chen , Fang Wen , Nenghai Yu

Temporal knowledge graphs (TKGs) have been identified as a promising approach to represent the dynamics of facts along the timeline. The extrapolation of TKG is to predict unknowable facts happening in the future, holding significant…

Artificial Intelligence · Computer Science 2023-12-05 Wei Chen , Huaiyu Wan , Yuting Wu , Shuyuan Zhao , Jiayaqi Cheng , Yuxin Li , Youfang Lin

A fundamental and challenging problem in deep learning is catastrophic forgetting, i.e. the tendency of neural networks to fail to preserve the knowledge acquired from old tasks when learning new tasks. This problem has been widely…

Computer Vision and Pattern Recognition · Computer Science 2022-05-23 Guanglei Yang , Enrico Fini , Dan Xu , Paolo Rota , Mingli Ding , Moin Nabi , Xavier Alameda-Pineda , Elisa Ricci

Unpaired image-to-image translation involves learning mappings between source domain and target domain in the absence of aligned or corresponding samples. Score based diffusion models have demonstrated state-of-the-art performance in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Venkata Narendra Kotyada , Revanth Eranki , Nagesh Bhattu Sristy

Many methods have been proposed for unsupervised time series anomaly detection. Despite some progress, research on predicting future anomalies is still relatively scarce. Predicting anomalies is particularly challenging due to the diverse…

Machine Learning · Computer Science 2024-10-22 Shiyan Hu , Kai Zhao , Xiangfei Qiu , Yang Shu , Jilin Hu , Bin Yang , Chenjuan Guo

Contrastive learning has gained popularity and pushes state-of-the-art performance across numerous large-scale benchmarks. In contrastive learning, the contrastive loss function plays a pivotal role in discerning similarities between…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Haojin Deng , Yimin Yang

There are a number of studies about extraction of bottleneck (BN) features from deep neural networks (DNNs)trained to discriminate speakers, pass-phrases and triphone states for improving the performance of text-dependent speaker…

Sound · Computer Science 2019-05-14 Achintya kr. Sarkar , Zheng-Hua Tan , Hao Tang , Suwon Shon , James Glass

Real-world data often exhibits long tail distributions with heavy class imbalance, where the majority classes can dominate the training process and alter the decision boundaries of the minority classes. Recently, researchers have…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Tianhong Li , Peng Cao , Yuan Yuan , Lijie Fan , Yuzhe Yang , Rogerio Feris , Piotr Indyk , Dina Katabi

Foundation models have recently gained attention within the field of machine learning thanks to its efficiency in broad data processing. While researchers had attempted to extend this success to time series models, the main challenge is…

Machine Learning · Computer Science 2023-11-22 Trang H. Tran , Lam M. Nguyen , Kyongmin Yeo , Nam Nguyen , Roman Vaculin

Self-supervised representation learning, particularly through contrastive methods like TS2Vec, has advanced the analysis of time series data. However, these models often falter in forecasting tasks because their objective functions…

Machine Learning · Computer Science 2025-12-01 Ganeshan Niroshan , Uthayasanker Thayasivam

Multi-modal contrastive learning (MMCL) has recently garnered considerable interest due to its superior performance in visual tasks, achieved by embedding multi-modal data, such as visual-language pairs. However, there still lack…

Computer Vision and Pattern Recognition · Computer Science 2023-06-08 Qi Zhang , Yifei Wang , Yisen Wang

Time series anomaly detection holds notable importance for risk identification and fault detection across diverse application domains. Unsupervised learning methods have become popular because they have no requirement for labels. However,…

Machine Learning · Computer Science 2025-05-05 Wenxin Zhang , Xiaojian Lin , Wenjun Yu , Guangzhen Yao , jingxiang Zhong , Yu Li , Renda Han , Songcheng Xu , Hao Shi , Cuicui Luo

Modeling dynamic temporal dependencies is a critical challenge in time series pre-training, which evolve due to distribution shifts and multi-scale patterns. This temporal variability severely impairs the generalization of pre-trained…

Machine Learning · Computer Science 2025-09-19 Yuemin Wu , Zhongze Wu , Xiu Su , Feng Yang , Hongyan Xu , Xi Lin , Wenti Huang , Shan You , Chang Xu

Contrastive learning has demonstrated promising potential in recommender systems. Existing methods typically construct sparser views by randomly perturbing the original interaction graph, as they have no idea about the authentic user…

Information Retrieval · Computer Science 2025-12-19 Xufeng Liang , Zhida Qin , Chong Zhang , Tianyu Huang , Gangyi Ding

Sequential Recommendationdescribes a set of techniques to model dynamic user behavior in order to predict future interactions in sequential user data. At their core, such approaches model transition probabilities between items in a…

Information Retrieval · Computer Science 2021-08-17 Zhiwei Liu , Yongjun Chen , Jia Li , Philip S. Yu , Julian McAuley , Caiming Xiong

We present a novel technique for self-supervised video representation learning by: (a) decoupling the learning objective into two contrastive subtasks respectively emphasizing spatial and temporal features, and (b) performing it…

Computer Vision and Pattern Recognition · Computer Science 2021-09-02 Zehua Zhang , David Crandall

Self-supervised learning (SSL) approaches have brought tremendous success across many tasks and domains. It has been argued that these successes can be attributed to a link between SSL and identifiable representation learning: Temporal…

Machine Learning · Statistics 2025-06-03 Rodrigo González Laiz , Tobias Schmidt , Steffen Schneider

Contrastive learning has shown great potential in video representation learning. However, existing approaches fail to sufficiently exploit short-term motion dynamics, which are crucial to various down-stream video understanding tasks. In…

Computer Vision and Pattern Recognition · Computer Science 2022-08-15 Jingcheng Ni , Nan Zhou , Jie Qin , Qian Wu , Junqi Liu , Boxun Li , Di Huang

Self-supervised learning for time-series representation aims to reduce reliance on labeled data while maintaining strong downstream performance, yet many existing approaches incur high computational costs or rely on assumptions that do not…

Machine Learning · Computer Science 2026-05-21 Abdul-Kazeem Shamba , Kerstin Bach , Gavin Taylor

Self-supervised learning (SSL) has become prevalent for learning representations in computer vision. Notably, SSL exploits contrastive learning to encourage visual representations to be invariant under various image transformations. The…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Swati Jindal , Roberto Manduchi
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