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Standard contrastive learning approaches usually require a large number of negatives for effective unsupervised learning and often exhibit slow convergence. We suspect this behavior is due to the suboptimal selection of negatives used for…

机器学习 · 计算机科学 2021-12-22 Anshul Shah , Suvrit Sra , Rama Chellappa , Anoop Cherian

Recent work has shown that, when integrated with adversarial training, self-supervised pre-training can lead to state-of-the-art robustness In this work, we improve robustness-aware self-supervised pre-training by learning representations…

计算机视觉与模式识别 · 计算机科学 2020-10-27 Ziyu Jiang , Tianlong Chen , Ting Chen , Zhangyang Wang

Text images contain both visual and linguistic information. However, existing pre-training techniques for text recognition mainly focus on either visual representation learning or linguistic knowledge learning. In this paper, we propose a…

计算机视觉与模式识别 · 计算机科学 2023-10-11 Pengyuan Lyu , Chengquan Zhang , Shanshan Liu , Meina Qiao , Yangliu Xu , Liang Wu , Kun Yao , Junyu Han , Errui Ding , Jingdong Wang

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…

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…

计算机视觉与模式识别 · 计算机科学 2022-08-15 Jingcheng Ni , Nan Zhou , Jie Qin , Qian Wu , Junqi Liu , Boxun Li , Di Huang

In graph self-supervised learning, masked autoencoders (MAE) and contrastive learning (CL) are two prominent paradigms. MAE focuses on reconstructing masked elements, while CL maximizes similarity between augmented graph views. Recent…

机器学习 · 计算机科学 2025-06-10 Di Lin , Wanjing Ren , Xuanbin Li , Rui Zhang

Self-supervised contrastive representation learning has proved incredibly successful in the vision and natural language domains, enabling state-of-the-art performance with orders of magnitude less labeled data. However, such methods are…

机器学习 · 计算机科学 2022-03-17 Dara Bahri , Heinrich Jiang , Yi Tay , Donald Metzler

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…

计算机视觉与模式识别 · 计算机科学 2023-06-08 Qi Zhang , Yifei Wang , Yisen Wang

In recent years, a variety of contrastive learning based unsupervised visual representation learning methods have been designed and achieved great success in many visual tasks. Generally, these methods can be roughly classified into four…

计算机视觉与模式识别 · 计算机科学 2022-11-29 Wenbin Li , Meihao Kong , Xuesong Yang , Lei Wang , Jing Huo , Yang Gao , Jiebo Luo

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…

计算机视觉与模式识别 · 计算机科学 2022-10-25 Swati Jindal , Roberto Manduchi

Multimodal representation learning is a challenging task in which previous work mostly focus on either uni-modality pre-training or cross-modality fusion. In fact, we regard modeling multimodal representation as building a skyscraper, where…

计算与语言 · 计算机科学 2024-08-15 Ronghao Lin , Haifeng Hu

Recently, both Contrastive Learning (CL) and Mask Image Modeling (MIM) demonstrate that self-supervision is powerful to learn good representations. However, naively combining them is far from success. In this paper, we start by making the…

计算机视觉与模式识别 · 计算机科学 2023-03-01 Ziyu Jiang , Yinpeng Chen , Mengchen Liu , Dongdong Chen , Xiyang Dai , Lu Yuan , Zicheng Liu , Zhangyang Wang

Contrastive learning has achieved great success in self-supervised visual representation learning, but existing approaches mostly ignored spatial information which is often crucial for visual representation. This paper presents…

计算机视觉与模式识别 · 计算机科学 2020-11-20 Xinyue Huo , Lingxi Xie , Longhui Wei , Xiaopeng Zhang , Hao Li , Zijie Yang , Wengang Zhou , Houqiang Li , Qi Tian

Self-supervised deep learning has accelerated 2D natural image analysis but remains difficult to translate into 3D MRI, where data are scarce and pre-trained 2D backbones cannot capture volumetric context. We present a…

计算机视觉与模式识别 · 计算机科学 2025-07-30 Liam Chalcroft , Jenny Crinion , Cathy J. Price , John Ashburner

Molecular Machine Learning (ML) bears promise for efficient molecule property prediction and drug discovery. However, labeled molecule data can be expensive and time-consuming to acquire. Due to the limited labeled data, it is a great…

机器学习 · 计算机科学 2022-04-01 Yuyang Wang , Jianren Wang , Zhonglin Cao , Amir Barati Farimani

Deep learning has achieved great success in recent years with the aid of advanced neural network structures and large-scale human-annotated datasets. However, it is often costly and difficult to accurately and efficiently annotate…

计算机视觉与模式识别 · 计算机科学 2023-03-23 Chen Feng , Ioannis Patras

This paper presents Contrastive Reconstruction, ConRec - a self-supervised learning algorithm that obtains image representations by jointly optimizing a contrastive and a self-reconstruction loss. We showcase that state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2022-02-23 Jonas Dippel , Steffen Vogler , Johannes Höhne

Unsupervised learning algorithms are beginning to achieve accuracies comparable to their supervised counterparts on benchmark computer vision tasks, but their utility for practical applications has not yet been demonstrated. In this work,…

计算机视觉与模式识别 · 计算机科学 2022-01-13 Jeremiah W. Johnson , Swathi Hari , Donald Hampton , Hyunju K. Connor , Amy Keesee

Semi-supervised learning has demonstrated great potential in medical image segmentation by utilizing knowledge from unlabeled data. However, most existing approaches do not explicitly capture high-level semantic relations between distant…

计算机视觉与模式识别 · 计算机科学 2023-12-07 Qianying Liu , Xiao Gu , Paul Henderson , Fani Deligianni

Network representation learning seeks to embed networks into a low-dimensional space while preserving the structural and semantic properties, thereby facilitating downstream tasks such as classification, trait prediction, edge…

机器学习 · 统计学 2025-09-16 Zihan Dong , Xin Zhou , Ryumei Nakada , Lexin Li , Linjun Zhang