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Importance weighting (IW) is a golden solver for joint distribution shift, where the joint distributions differ between the training and test data. To solve this problem, IW estimates test-to-training density ratios as importance weights…

机器学习 · 计算机科学 2026-05-26 Tongtong Fang , Nan Lu , Gang Niu , Kenji Fukumizu , Masashi Sugiyama

This paper introduces a novel framework for model adaptivity in the context of heterogeneous multiscale problems. The framework is based on the idea to interpret model adaptivity as a minimization problem of local error indicators, that are…

数值分析 · 数学 2017-12-04 Matthias Maier , Rolf Rannacher

Cross-view geo-localization (CVGL) between drone and satellite imagery remains challenging due to severe viewpoint gaps and the presence of hard negatives, which are visually similar but geographically mismatched samples. Existing mining or…

计算机视觉与模式识别 · 计算机科学 2025-11-05 Guozheng Zheng , Jian Guan , Mingjie Xie , Xuanjia Zhao , Congyi Fan , Shiheng Zhang , Pengming Feng

Concept shift is a prevailing problem in natural tasks like medical image segmentation where samples usually come from different subpopulations with variant correlations between features and labels. One common type of concept shift in…

计算机视觉与模式识别 · 计算机科学 2023-02-01 Yijun Dong , Yuege Xie , Rachel Ward

Reinforcement learning (RL) has made significant advancements, achieving superhuman performance in various tasks. However, RL agents often operate under the assumption of environmental stationarity, which poses a great challenge to learning…

机器学习 · 计算机科学 2025-11-18 Guoqing Ma , Yuhan Zhang , Yuming Dai , Guangfu Hao , Yang Chen , Shan Yu

Selecting the optimal radio access technology (RAT) during vertical handovers (VHO) in heterogeneous wireless networks (HWNs) is critical. Multi-attribute decision-making (MADM) is the most common approach used for network selection (NS) in…

网络与互联网体系结构 · 计算机科学 2025-04-03 Brahim Mefgouda , Hanen Idoudi , Mohammad Al-Quraan , Ismail Lotfi , Omar Alhussein , Lina Mohjazi , Sami Muhaidat

AdamW has become one of the most effective optimizers for training large-scale models. We have also observed its effectiveness in the context of federated learning (FL). However, directly applying AdamW in federated learning settings poses…

机器学习 · 计算机科学 2026-04-21 Junkang Liu , Fanhua Shang , Hongying Liu , Yuxuan Tian , Yuanyuan Liu , Jin Liu , Kewen Zhu , Zhouchen Lin

Cross-view geo-localization aims to spot images of the same location shot from two platforms, e.g., the drone platform and the satellite platform. Existing methods usually focus on optimizing the distance between one embedding with others…

计算机视觉与模式识别 · 计算机科学 2022-11-11 Tingyu Wang , Zhedong Zheng , Zunjie Zhu , Yuhan Gao , Yi Yang , Chenggang Yan

Convolutional neural networks (CNNs) have attracted increasing attention in the remote sensing community. Most CNNs only take the last fully-connected layers as features for the classification of remotely sensed images, discarding the other…

计算机视觉与模式识别 · 计算机科学 2016-11-14 Qingshan Liu , Renlong Hang , Huihui Song , Fuping Zhu , Javier Plaza , Antonio Plaza

We address the detection of material defects, which are inside a layered material structure using compressive sensing based multiple-input and multiple-output (MIMO) wireless radar. Here, the strong clutter due to the reflection of the…

信号处理 · 电气工程与系统科学 2022-04-18 Udaya S. K. P. Miriya Thanthrige , Peter Jung , Aydin Sezgin

Algorithms for learning distributions over weight-vectors, such as AROW were recently shown empirically to achieve state-of-the-art performance at various problems, with strong theoretical guaranties. Extending these algorithms to matrix…

机器学习 · 计算机科学 2012-06-22 Koby Crammer , Gal Chechik

Medical image fusion integrates complementary information from multiple imaging modalities to improve clinical interpretation. However, existing deep learningbased methods, including recent spatial-frequency frameworks such as AdaFuse and…

图像与视频处理 · 电气工程与系统科学 2026-02-10 Md. Jahidul Islam

Change detection in remote sensing imagery is a critical technique for Earth observation, primarily focusing on pixel-level segmentation of change regions between bi-temporal images. The essence of pixel-level change detection lies in…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Sijun Dong , Fangcheng Zuo , Geng Chen , Siming Fu , Xiaoliang Meng

The rapid evolution of speech synthesis and voice conversion has raised substantial concerns due to the potential misuse of such technology, prompting a pressing need for effective audio deepfake detection mechanisms. Existing detection…

声音 · 计算机科学 2023-12-18 Xiaohui Zhang , Jiangyan Yi , Chenglong Wang , Chuyuan Zhang , Siding Zeng , Jianhua Tao

The challenge of image generation has been effectively modeled as a problem of structure priors or transformation. However, existing models have unsatisfactory performance in understanding the global input image structures because of…

计算机视觉与模式识别 · 计算机科学 2023-10-26 Pourya Shamsolmoali , Masoumeh Zareapoor , Huiyu Zhou , Xuelong Li , Yue Lu

We consider a global variable consensus ADMM algorithm for solving large-scale PDE parameter estimation problems asynchronously and in parallel. To this end, we partition the data and distribute the resulting subproblems among the available…

数值分析 · 数学 2019-05-01 Samy Wu Fung , Lars Ruthotto

Change detection in remote sensing imagery plays a vital role in various engineering applications, such as natural disaster monitoring, urban expansion tracking, and infrastructure management. Despite the remarkable progress of deep…

计算机视觉与模式识别 · 计算机科学 2025-08-08 Xiaoyang Zhang , Guodong Fan , Guang-Yong Chen , Zhen Hua , Jinjiang Li , Min Gan , C. L. Philip Chen

Geographically Weighted Regression (GWR) is a widely recognized technique for modeling spatial heterogeneity. However, it is commonly assumed that the relationships between dependent and independent variables are linear. To overcome this…

机器学习 · 计算机科学 2025-04-08 Jianfei Cao , Dongchao Wang

Remote sensing change detection between bi-temporal images receives growing concentration from researchers. However, comparing two bi-temporal images for detecting changes is challenging, as they demonstrate different appearances. In this…

计算机视觉与模式识别 · 计算机科学 2023-10-04 Luyi Qiu , Xiaofeng Zhang , ChaoChen Gu , and ShanYing Zhu

Purpose: To accelerate radially sampled diffusion weighted spin-echo (Rad-DW-SE) acquisition method for generating high quality apparent diffusion coefficient (ADC) maps. Methods: A deep learning method was developed to generate accurate…

图像与视频处理 · 电气工程与系统科学 2023-08-15 Yuemeng Li , Miguel Romanello Joaquim , Stephen Pickup , Hee Kwon Song , Rong Zhou , Yong Fan
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