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As an exemplary self-supervised approach for representation learning, time-series contrastive learning has exhibited remarkable advancements in contemporary research. While recent contrastive learning strategies have focused on how to…

机器学习 · 计算机科学 2024-08-27 Xiyuan Jin , Jing Wang , Lei Liu , Youfang Lin

Deploying machine learning models in resource-constrained environments, such as edge devices or rapid prototyping scenarios, increasingly demands distillation of large datasets into significantly smaller yet informative synthetic datasets.…

计算机视觉与模式识别 · 计算机科学 2025-05-23 Wenmin Li , Shunsuke Sakai , Tatsuhito Hasegawa

Linking sheet music images to audio recordings remains a key problem for the development of efficient cross-modal music retrieval systems. One of the fundamental approaches toward this task is to learn a cross-modal embedding space via deep…

声音 · 计算机科学 2023-09-22 Luis Carvalho , Tobias Washüttl , Gerhard Widmer

There have been several recent efforts towards developing representations for multivariate time-series in an unsupervised learning framework. Such representations can prove beneficial in tasks such as activity recognition, health…

机器学习 · 计算机科学 2022-09-23 Yitian Zhang , Florence Regol , Antonios Valkanas , Mark Coates

One central question for video action recognition is how to model motion. In this paper, we present hierarchical contrastive motion learning, a new self-supervised learning framework to extract effective motion representations from raw…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Xitong Yang , Xiaodong Yang , Sifei Liu , Deqing Sun , Larry Davis , Jan Kautz

We argue that a form of the valuable information provided by the auxiliary information is its implied data clustering information. For instance, considering hashtags as auxiliary information, we can hypothesize that an Instagram image will…

In the era of big data and Artificial Intelligence, an emerging paradigm is to utilize contrastive self-supervised learning to model large-scale heterogeneous data. Many existing foundation models benefit from the generalization capability…

机器学习 · 计算机科学 2024-04-02 Lecheng Zheng , Baoyu Jing , Zihao Li , Hanghang Tong , Jingrui He

Contrastive learning is among the most successful methods for visual representation learning, and its performance can be further improved by jointly performing clustering on the learned representations. However, existing methods for joint…

计算机视觉与模式识别 · 计算机科学 2022-09-16 Shunjie-Fabian Zheng , JaeEun Nam , Emilio Dorigatti , Bernd Bischl , Shekoofeh Azizi , Mina Rezaei

Sequential recommendation methods play a crucial role in modern recommender systems because of their ability to capture a user's dynamic interest from her/his historical interactions. Despite their success, we argue that these approaches…

信息检索 · 计算机科学 2021-03-02 Xu Xie , Fei Sun , Zhaoyang Liu , Shiwen Wu , Jinyang Gao , Bolin Ding , Bin Cui

The lack of labeled data is a key challenge for learning useful representation from time series data. However, an unsupervised representation framework that is capable of producing high quality representations could be of great value. It is…

Advanced graph neural networks have shown great potentials in graph classification tasks recently. Different from node classification where node embeddings aggregated from local neighbors can be directly used to learn node labels, graph…

机器学习 · 计算机科学 2022-03-16 Hao Jia , Junzhong Ji , Minglong Lei

Contrastive learning has been the dominant approach to train state-of-the-art sentence embeddings. Previous studies have typically learned sentence embeddings either through the use of human-annotated natural language inference (NLI) data…

计算与语言 · 计算机科学 2023-10-25 Junlei Zhang , Zhenzhong Lan , Junxian He

Knowledge distillation is commonly employed to compress neural networks, reducing the inference costs and memory footprint. In the scenario of homogenous architecture, feature-based methods have been widely validated for their…

计算机视觉与模式识别 · 计算机科学 2024-05-30 Hongjun Wu , Li Xiao , Xingkuo Zhang , Yining Miao

Deep neural networks (DNNs) have achieved remarkable success in computer vision tasks such as image classification, segmentation, and object detection. However, they are vulnerable to adversarial attacks, which can cause incorrect…

计算机视觉与模式识别 · 计算机科学 2025-11-03 Suklav Ghosh , Sonal Kumar , Arijit Sur

Contrastive learning has achieved state-of-the-art performance in various self-supervised learning tasks and even outperforms its supervised counterpart. Despite its empirical success, theoretical understanding of the superiority of…

机器学习 · 计算机科学 2023-12-21 Wenlong Ji , Zhun Deng , Ryumei Nakada , James Zou , Linjun Zhang

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…

机器学习 · 统计学 2025-06-03 Rodrigo González Laiz , Tobias Schmidt , Steffen Schneider

We present a new approach to instill 4D dynamic object priors into learned 3D representations by unsupervised pre-training. We observe that dynamic movement of an object through an environment provides important cues about its objectness,…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Yujin Chen , Matthias Nießner , Angela Dai

Current contrastive learning frameworks focus on leveraging a single supervisory signal to learn representations, which limits the efficacy on unseen data and downstream tasks. In this paper, we present a hierarchical multi-label…

计算机视觉与模式识别 · 计算机科学 2022-04-29 Shu Zhang , Ran Xu , Caiming Xiong , Chetan Ramaiah

This paper demonstrates a self-supervised framework for learning voxel-wise coarse-to-fine representations tailored for dense downstream tasks. Our approach stems from the observation that existing methods for hierarchical representation…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Eytan Kats , Jochen G. Hirsch , Mattias P. Heinrich

Self-supervised learning (especially contrastive learning) has attracted great interest due to its huge potential in learning discriminative representations in an unsupervised manner. Despite the acknowledged successes, existing contrastive…

计算机视觉与模式识别 · 计算机科学 2021-10-22 Guangrun Wang , Keze Wang , Guangcong Wang , Philip H. S. Torr , Liang Lin