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Graph contrastive learning is the state-of-the-art unsupervised graph representation learning framework and has shown comparable performance with supervised approaches. However, evaluating whether the graph contrastive learning is robust to…

Machine Learning · Computer Science 2022-01-28 Sixiao Zhang , Hongxu Chen , Xiangguo Sun , Yicong Li , Guandong Xu

Robotic tasks such as manipulation with visual inputs require image features that capture the physical properties of the scene, e.g., the position and configuration of objects. Recently, it has been suggested to learn such features in an…

Machine Learning · Computer Science 2021-06-09 Carmel Rabinovitz , Niko Grupen , Aviv Tamar

The vast amount of unlabeled multi-temporal and multi-sensor remote sensing data acquired by the many Earth Observation satellites present a challenge for change detection. Recently, many generative model-based methods have been proposed…

Image and Video Processing · Electrical Eng. & Systems 2022-02-16 Yuxing Chen , Lorenzo Bruzzone

Large-scale labeled data are generally required to train deep neural networks in order to obtain better performance in visual feature learning from images or videos for computer vision applications. To avoid extensive cost of collecting and…

Computer Vision and Pattern Recognition · Computer Science 2019-02-19 Longlong Jing , Yingli Tian

While supervised learning has enabled great progress in many applications, unsupervised learning has not seen such widespread adoption, and remains an important and challenging endeavor for artificial intelligence. In this work, we propose…

Machine Learning · Computer Science 2019-01-23 Aaron van den Oord , Yazhe Li , Oriol Vinyals

Learning robust representations to discriminate cell phenotypes based on microscopy images is important for drug discovery. Drug development efforts typically analyse thousands of cell images to screen for potential treatments. Early works…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 Alexis Perakis , Ali Gorji , Samriddhi Jain , Krishna Chaitanya , Simone Rizza , Ender Konukoglu

In this paper, we make two contributions to unsupervised domain adaptation (UDA) using the convolutional neural network (CNN). First, our approach transfers knowledge in all the convolutional layers through attention alignment. Most…

Computer Vision and Pattern Recognition · Computer Science 2018-08-14 Guoliang Kang , Liang Zheng , Yan Yan , Yi Yang

Contrastive learning, which aims to capture general representation from unlabeled images to initialize the medical analysis models, has been proven effective in alleviating the high demand for expensive annotations. Current methods mainly…

Computer Vision and Pattern Recognition · Computer Science 2022-08-18 Huai Chen , Renzhen Wang , Xiuying Wang , Jieyu Li , Qu Fang , Hui Li , Jianhao Bai , Qing Peng , Deyu Meng , Lisheng Wang

Semi-supervised learning methods have shown promising results in solving many practical problems when only a few labels are available. The existing methods assume that the class distributions of labeled and unlabeled data are equal;…

Machine Learning · Computer Science 2024-08-06 Min Gu Kwak , Hyungu Kahng , Seoung Bum Kim

Assume you encounter an inverse problem that shall be solved for a large number of data, but no ground-truth data is available. To emulate this encounter, in this study, we assume it is unknown how to solve the imaging problem of Computed…

Visual recognition is recently learned via either supervised learning on human-annotated image-label data or language-image contrastive learning with webly-crawled image-text pairs. While supervised learning may result in a more…

Computer Vision and Pattern Recognition · Computer Science 2022-04-08 Jianwei Yang , Chunyuan Li , Pengchuan Zhang , Bin Xiao , Ce Liu , Lu Yuan , Jianfeng Gao

3D deep learning is a growing field of interest due to the vast amount of information stored in 3D formats. Triangular meshes are an efficient representation for irregular, non-uniform 3D objects. However, meshes are often challenging to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Ayaan Haque , Hankyu Moon , Heng Hao , Sima Didari , Jae Oh Woo , Patrick Bangert

Recent approaches in self-supervised learning of image representations can be categorized into different families of methods and, in particular, can be divided into contrastive and non-contrastive approaches. While differences between the…

Machine Learning · Computer Science 2023-06-27 Quentin Garrido , Yubei Chen , Adrien Bardes , Laurent Najman , Yann Lecun

Deep representation learning is a crucial procedure in multimedia analysis and attracts increasing attention. Most of the popular techniques rely on convolutional neural network and require a large amount of labeled data in the training…

Computer Vision and Pattern Recognition · Computer Science 2020-09-14 Jinghua Wang , Adrian Hilton , Jianmin Jiang

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

Unsupervised domain adaptation (UDA) aims to transfer and adapt knowledge from a labeled source domain to an unlabeled target domain. Traditionally, subspace-based methods form an important class of solutions to this problem. Despite their…

Machine Learning · Computer Science 2022-01-07 Kowshik Thopalli , Jayaraman J Thiagarajan , Rushil Anirudh , Pavan K Turaga

Deep models trained in supervised mode have achieved remarkable success on a variety of tasks. When labeled samples are limited, self-supervised learning (SSL) is emerging as a new paradigm for making use of large amounts of unlabeled…

Machine Learning · Computer Science 2022-04-26 Yaochen Xie , Zhao Xu , Jingtun Zhang , Zhengyang Wang , Shuiwang Ji

Contrastive learning is among the most popular and powerful approaches for self-supervised representation learning, where the goal is to map semantically similar samples close together while separating dissimilar ones in the latent space.…

Machine Learning · Statistics 2025-12-03 Ali Alvandi , Mina Rezaei

Unsupervised Domain Adaptation (UDA) aims to align the labeled source distribution with the unlabeled target distribution to obtain domain invariant predictive models. However, the application of well-known UDA approaches does not…

Computer Vision and Pattern Recognition · Computer Science 2021-11-11 Ankit Singh

The accuracy of deep learning (e.g., convolutional neural networks) for an image classification task critically relies on the amount of labeled training data. Aiming to solve an image classification task on a new domain that lacks labeled…

Computer Vision and Pattern Recognition · Computer Science 2019-01-01 Xianghong Fang , Haoli Bai , Ziyi Guo , Bin Shen , Steven Hoi , Zenglin Xu