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In the field of heart disease classification, two primary obstacles arise. Firstly, existing Electrocardiogram (ECG) datasets consistently demonstrate imbalances and biases across various modalities. Secondly, these time-series data consist…

机器学习 · 计算机科学 2024-07-31 Thao Hoang , Linh Nguyen , Khoi Do , Duong Nguyen , Viet Dung Nguyen

We investigate a range of techniques for the acceleration of Calder\'on (operator) preconditioning in the context of boundary integral equation methods for electromagnetic transmission problems. Our objective is to mitigate as far as…

Proper losses such as cross-entropy incentivize classifiers to produce class probabilities that are well-calibrated on the training data. Due to the generalization gap, these classifiers tend to become overconfident on the test data,…

机器学习 · 计算机科学 2025-08-27 Viacheslav Komisarenko , Meelis Kull

Many modern wireless networks integrate carrier sense mul-tiple access/collision avoidance (CSMA/CA) with exponential backoff as medium access control (MAC) technique. In order to decrease the MAC overhead and the collision probability, we…

网络与互联网体系结构 · 计算机科学 2015-01-08 Baher Mawlawi , Jean-Baptiste Doré

We consider the scientifically challenging and policy-relevant task of understanding the past and projecting the future dynamics of the Antarctic ice sheet. The Antarctic ice sheet has shown a highly nonlinear threshold response to past…

应用统计 · 统计学 2019-08-20 Ben Seiyon Lee , Murali Haran , Robert Fuller , David Pollard , Klaus Keller

Deep metric learning (DML) aims to learn a discriminative high-dimensional embedding space for downstream tasks like classification, clustering, and retrieval. Prior literature predominantly focuses on pair-based and proxy-based methods to…

计算机视觉与模式识别 · 计算机科学 2024-07-04 Xiruo Jiang , Yazhou Yao , Xili Dai , Fumin Shen , Xian-Sheng Hua , Heng-Tao Shen

Understanding the 3D structure of coronal mass ejections (CMEs) is crucial for understanding the nature and origin of solar eruptions. To derive information on the 3D structure of CMEs from white-light (total and polarized brightness)…

太阳与恒星天体物理 · 物理学 2015-10-14 Paolo Pagano , Alessandro Bemporad , Duncan Mackay

Myocardial contrast echocardiography (MCE) is an imaging technique that assesses left ventricle function and myocardial perfusion for the detection of coronary artery diseases. Automatic MCE perfusion quantification is challenging and…

计算机视觉与模式识别 · 计算机科学 2018-06-21 Yuanwei Li , Chin Pang Ho , Matthieu Toulemonde , Navtej Chahal , Roxy Senior , Meng-Xing Tang

Long-tailed instance segmentation is a challenging task due to the extreme imbalance of training samples among classes. It causes severe biases of the head classes (with majority samples) against the tailed ones. This renders "how to…

计算机视觉与模式识别 · 计算机科学 2022-04-05 Yin-Yin He , Peizhen Zhang , Xiu-Shen Wei , Xiangyu Zhang , Jian Sun

Collecting time series data spatially distributed in many locations is often important for analyzing climate change and its impacts on ecosystems. However, comprehensive spatial data collection is not always feasible, requiring us to…

机器学习 · 计算机科学 2024-06-06 Shihori Koyama , Daisuke Inoue , Hiroaki Yoshida , Kazuyuki Aihara , Gouhei Tanaka

Within medical imaging segmentation, the Dice coefficient and Hausdorff-based metrics are standard measures of success for deep learning models. However, modern loss functions for medical image segmentation often only consider the Dice…

图像与视频处理 · 电气工程与系统科学 2024-01-26 Adrian Celaya , Beatrice Riviere , David Fuentes

Long-term state estimation over graphs remains challenging as current graph estimation methods scale poorly on large, long-term graphs. To address this, our work advances a current state-of-the-art graph sparsification algorithm, maximizing…

机器人学 · 计算机科学 2025-11-13 Leonard Jung , Alan Papalia , Kevin Doherty , Michael Everett

Semi-supervised semantic segmentation needs rich and robust supervision on unlabeled data. Consistency learning enforces the same pixel to have similar features in different augmented views, which is a robust signal but neglects…

计算机视觉与模式识别 · 计算机科学 2022-08-18 Yunzhong Hou , Stephen Gould , Liang Zheng

Parameters in climate models are usually calibrated manually, exploiting only small subsets of the available data. This precludes both optimal calibration and quantification of uncertainties. Traditional Bayesian calibration methods that…

Medical image segmentation is one of the fundamental problems for artificial intelligence-based clinical decision systems. Current automatic medical image segmentation methods are often failed to meet clinical requirements. As such, a…

计算机视觉与模式识别 · 计算机科学 2021-11-16 Wenhao Li , Qisen Xu , Chuyun Shen , Bin Hu , Fengping Zhu , Yuxin Li , Bo Jin , Xiangfeng Wang

We propose a novel data harmonization approach known as Tensor-ComBat (TC) for structural neuroimaging data. Tensor-Combat is a novel spatially aware harmonization method that aims to estimate and remove unwanted technical variation between…

统计方法学 · 统计学 2026-04-03 Alec Reinhardt , Yajie Liu , Suprateek Kundu

The joint detection uses Kalman filtering (KF) to estimate the prior probability of control outputs to assist channel decoding. In this paper, we regard the joint detection as maximum a posteriori (MAP) decoding and derive the lower and…

信息论 · 计算机科学 2026-01-13 Jinnan Piao , Dong Li , Zhibo Li , Ming Yang , Xueting Yu , Jincheng Dai

Model Predictive Control (MPC) is widely used in robot control by optimizing a sequence of control outputs over a finite-horizon. Computational approaches for MPC include deterministic methods (e.g., iLQR and COBYLA), as well as…

机器人学 · 计算机科学 2025-11-03 Zhaoxin Li , Xiaoke Wang , Letian Chen , Rohan Paleja , Subramanya Nageshrao , Matthew Gombolay

Most Machine Learning (ML) methods, from clustering to classification, rely on a distance function to describe relationships between datapoints. For complex datasets it is hard to avoid making some arbitrary choices when defining a distance…

机器学习 · 统计学 2016-07-04 Gina Gruenhage , Manfred Opper , Simon Barthelme

Leveraging channel state information from multiple Wi-Fi bands can improve delay resolution for ranging and sensing when a wide contiguous spectrum is unavailable. However, frequency gaps shape the delay response, introducing sidelobes and…

信号处理 · 电气工程与系统科学 2026-02-23 Ana Jeknić , Aleš Švigelj , Tomaž Javornik , Andrej Hrovat