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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…

Microscopy image analysis is fundamental for different applications, from diagnosis to synthetic engineering and environmental monitoring. Modern acquisition systems have granted the possibility to acquire an escalating amount of images,…

计算机视觉与模式识别 · 计算机科学 2025-06-26 Jacopo Dapueto , Vito Paolo Pastore , Nicoletta Noceti , Francesca Odone

Learning useful data representations without requiring labels is a cornerstone of modern deep learning. Self-supervised learning methods, particularly contrastive learning (CL), have proven successful by leveraging data augmentations to…

机器学习 · 计算机科学 2023-12-11 Sacha Morin , Somjit Nath , Samira Ebrahimi Kahou , Guy Wolf

There has been an increasing focus in learning interpretable feature representations, particularly in applications such as medical image analysis that require explainability, whilst relying less on annotated data (since annotations can be…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Gabriele Valvano , Agisilaos Chartsias , Andrea Leo , Sotirios A. Tsaftaris

Change detection (CD) is an important yet challenging task in the Earth observation field for monitoring Earth surface dynamics. The advent of deep learning techniques has recently propelled automatic CD into a technological revolution.…

计算机视觉与模式识别 · 计算机科学 2023-07-25 Haonan Guo , Bo Du , Chen Wu , Chengxi Han , Liangpei Zhang

Contrastive learning allows us to flexibly define powerful losses by contrasting positive pairs from sets of negative samples. Recently, the principle has also been used to learn cross-modal embeddings for video and text, yet without…

计算机视觉与模式识别 · 计算机科学 2021-10-01 Mohammadreza Zolfaghari , Yi Zhu , Peter Gehler , Thomas Brox

The healthcare industry generates troves of unlabelled physiological data. This data can be exploited via contrastive learning, a self-supervised pre-training method that encourages representations of instances to be similar to one another.…

机器学习 · 计算机科学 2021-05-18 Dani Kiyasseh , Tingting Zhu , David A. Clifton

Recently, learning effective representations of urban regions has gained significant attention as a key approach to understanding urban dynamics and advancing smarter cities. Existing approaches have demonstrated the potential of leveraging…

机器学习 · 计算机科学 2025-02-06 Namwoo Kim , Takahiro Yabe , Chanyoung Park , Yoonjin Yoon

An electrocardiogram (ECG) is a widely used, cost-effective tool for detecting electrical abnormalities in the heart. However, it cannot directly measure functional parameters, such as ventricular volumes and ejection fraction, which are…

图像与视频处理 · 电气工程与系统科学 2025-06-27 Alexander Selivanov , Philip Müller , Özgün Turgut , Nil Stolt-Ansó , Daniel Rückert

Contrastive representation learning is crucial in time series analysis as it alleviates the issue of data noise and incompleteness as well as sparsity of supervision signal. However, existing constrastive learning frameworks usually focus…

机器学习 · 计算机科学 2024-06-26 Haozhi Gao , Qianqian Ren , Jinbao Li

Unsupervised Re-ID methods aim at learning robust and discriminative features from unlabeled data. However, existing methods often ignore the relationship between module parameters of Re-ID framework and feature distributions, which may…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Ziqi He , Mengjia Xue , Yunhao Du , Zhicheng Zhao , Fei Su

Automatic cell tracking in dense environments is plagued by inaccurate correspondences and misidentification of parent-offspring relationships. In this paper, we introduce a novel cell tracking algorithm named DenseTrack, which integrates…

图像与视频处理 · 电气工程与系统科学 2024-07-08 Tanjin Taher Toma , Yibo Wang , Andreas Gahlmann , Scott T. Acton

The proliferation of digital microscopy images, driven by advances in automated whole slide scanning, presents significant opportunities for biomedical research and clinical diagnostics. However, accurately annotating densely packed…

计算机视觉与模式识别 · 计算机科学 2025-04-25 Chen Liu , Danqi Liao , Alejandro Parada-Mayorga , Alejandro Ribeiro , Marcello DiStasio , Smita Krishnaswamy

Dysarthric speech recognition often suffers from performance degradation due to the intrinsic diversity of dysarthric severity and extrinsic disparity from normal speech. To bridge these gaps, we propose a Dynamic Phoneme-level Contrastive…

计算与语言 · 计算机科学 2025-02-04 Wonjun Lee , Solee Im , Heejin Do , Yunsu Kim , Jungseul Ok , Gary Geunbae Lee

Despite recent success, most contrastive self-supervised learning methods are domain-specific, relying heavily on data augmentation techniques that require knowledge about a particular domain, such as image cropping and rotation. To…

机器学习 · 计算机科学 2021-07-21 Vikas Verma , Minh-Thang Luong , Kenji Kawaguchi , Hieu Pham , Quoc V. Le

The accurate tracking of live cells using video microscopy recordings remains a challenging task for popular state-of-the-art image processing based object tracking methods. In recent years, several existing and new applications have…

图像与视频处理 · 电气工程与系统科学 2025-02-03 Gergely Szabó , Paolo Bonaiuti , Andrea Ciliberto , András Horváth

Recommender systems usually rely on observed user interaction data to build personalized recommendation models, assuming that the observed data reflect user interest. However, user interacting with an item may also due to conformity, the…

信息检索 · 计算机科学 2023-02-09 Weiqi Zhao , Dian Tang , Xin Chen , Dawei Lv , Daoli Ou , Biao Li , Peng Jiang , Kun Gai

Unsupervised learning has been a long-standing goal of machine learning and is especially important for medical image analysis, where the learning can compensate for the scarcity of labeled datasets. A promising subclass of unsupervised…

图像与视频处理 · 电气工程与系统科学 2021-09-09 Ozan Ciga , Tony Xu , Anne L. Martel

In the field of multimodal fact checking, the accuracy of retrieving evidence from different modalities has a significant impact on the downstream claim verification process. Existing general multimodal retrieval methods are often…

信息检索 · 计算机科学 2026-05-28 Zhongtian Hua , Yi Luo , Meijia Yu , Yingjie Han

Single-cell RNA sequencing (scRNA-seq) enables researchers to analyze gene expression at single-cell level. One important task in scRNA-seq data analysis is unsupervised clustering, which helps identify distinct cell types, laying down the…

基因组学 · 定量生物学 2023-12-29 Weikang Jiang , Jinxian Wang , Jihong Guan , Shuigeng Zhou