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Survey data are often collected under multistage sampling designs where units are binned to clusters that are sampled in a first stage. The unit-indexed population variables of interest are typically dependent within cluster. We propose a…

统计方法学 · 统计学 2021-08-26 Luis G. Leon-Novelo , Terrance D. Savitsky

We propose a method for automatic segmentation of individual muscles from a clinical CT. The method uses Bayesian convolutional neural networks with the U-Net architecture, using Monte Carlo dropout that infers an uncertainty metric in…

图像与视频处理 · 电气工程与系统科学 2019-12-10 Yuta Hiasa , Yoshito Otake , Masaki Takao , Takeshi Ogawa , Nobuhiko Sugano , Yoshinobu Sato

Background and objective: Uncertainty quantification is a pivotal field that contributes to realizing reliable and robust systems. It becomes instrumental in fortifying safe decisions by providing complementary information, particularly…

图像与视频处理 · 电气工程与系统科学 2024-03-19 Jamil Fayyad , Shadi Alijani , Homayoun Najjaran

Bayesian neural networks (BNNs) provide a formalism to quantify and calibrate uncertainty in deep learning. Current inference approaches for BNNs often resort to few-sample estimation for scalability, which can harm predictive performance,…

机器学习 · 计算机科学 2024-02-14 Zhe Zeng , Guy Van den Broeck

Brain connectivity analysis based on magnetic resonance imaging is crucial for understanding neurological mechanisms. However, edge-based connectivity inference faces significant challenges, particularly the curse of dimensionality when…

统计方法学 · 统计学 2025-12-23 Zijing Li , Chenhao Zeng , Shufei Ge

Through the Bayesian lens of data assimilation, uncertainty on model parameters is traditionally quantified through the posterior covariance matrix. However, in modern settings involving high-dimensional and computationally expensive…

统计计算 · 统计学 2023-11-16 Michael Stanley , Mikael Kuusela , Brendan Byrne , Junjie Liu

Uncertainty quantification in a neural network is one of the most discussed topics for safety-critical applications. Though Neural Networks (NNs) have achieved state-of-the-art performance for many applications, they still provide…

机器学习 · 计算机科学 2022-05-09 Mehedi Hasan , Abbas Khosravi , Ibrahim Hossain , Ashikur Rahman , Saeid Nahavandi

Brain tumor segmentation is a fundamental step in assessing a patient's cancer progression. However, manual segmentation demands significant expert time to identify tumors in 3D multimodal brain MRI scans accurately. This reliance on manual…

图像与视频处理 · 电气工程与系统科学 2024-05-07 Fadillah Maani , Anees Ur Rehman Hashmi , Numan Saeed , Mohammad Yaqub

Deep learning models struggle with uncertainty estimation. Many approaches are either computationally infeasible or underestimate uncertainty. We investigate \textit{BatchEnsemble} as a general and scalable method for uncertainty estimation…

机器学习 · 计算机科学 2026-01-30 Morten Blørstad , Herman Jangsett Mostein , Nello Blaser , Pekka Parviainen

Deep neural networks(NNs) have achieved impressive performance, often exceed human performance on many computer vision tasks. However, one of the most challenging issues that still remains is that NNs are overconfident in their predictions,…

机器学习 · 计算机科学 2019-12-30 Chanwoo Park , Jae Myung Kim , Seok Hyeon Ha , Jungwoo Lee

Aleatoric uncertainty quantification seeks for distributional knowledge of random responses, which is important for reliability analysis and robustness improvement in machine learning applications. Previous research on aleatoric uncertainty…

机器学习 · 计算机科学 2022-06-10 Ziyi Huang , Henry Lam , Haofeng Zhang

Efficient intravascular access in trauma and critical care significantly impacts patient outcomes. However, the availability of skilled medical personnel in austere environments is often limited. Autonomous robotic ultrasound systems can…

计算机视觉与模式识别 · 计算机科学 2024-08-01 Rohini Banerjee , Cecilia G. Morales , Artur Dubrawski

Uncertainty assessment has gained rapid interest in medical image analysis. A popular technique to compute epistemic uncertainty is the Monte-Carlo (MC) dropout technique. From a network with MC dropout and a single input, multiple outputs…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Robin Camarasa , Daniel Bos , Jeroen Hendrikse , Paul Nederkoorn , M. Eline Kooi , Aad van der Lugt , Marleen de Bruijne

Cognitive diagnosis models have been widely used in different areas, especially intelligent education, to measure users' proficiency levels on knowledge concepts, based on which users can get personalized instructions. As the measurement is…

计算机与社会 · 计算机科学 2024-03-25 Fei Wang , Qi Liu , Enhong Chen , Chuanren Liu , Zhenya Huang , Jinze Wu , Shijin Wang

Inverse optimization (IO) is used to estimate unknown parameters of an optimization model from observed decisions. In the data-driven context, the estimated parameters are inherently uncertain, yet quantifying this uncertainty has received…

最优化与控制 · 数学 2026-05-26 Timothy C. Y. Chan , Nathan Sandholtz , Nasrin Yousefi

Existing popular unsupervised embedding learning methods focus on enhancing the instance-level local discrimination of the given unlabeled images by exploring various negative data. However, the existed sample outliers which exhibit large…

计算机视觉与模式识别 · 计算机科学 2021-07-20 Jiahuan Zhou , Yansong Tang , Bing Su , Ying Wu

Deep regression is an important problem with numerous applications. These range from computer vision tasks such as age estimation from photographs, to medical tasks such as ejection fraction estimation from echocardiograms for disease…

计算机视觉与模式识别 · 计算机科学 2023-02-16 Weihang Dai , Xiaomeng Li , Kwang-Ting Cheng

Uncertainty quantification in inverse medical imaging tasks with deep learning has received little attention. However, deep models trained on large data sets tend to hallucinate and create artifacts in the reconstructed output that are not…

图像与视频处理 · 电气工程与系统科学 2020-08-21 Max-Heinrich Laves , Malte Tölle , Tobias Ortmaier

Numerical models are increasingly used for non-invasive diagnosis and treatment planning in coronary artery disease, where service-based technologies have proven successful in identifying hemodynamically significant and hence potentially…

医学物理 · 物理学 2020-05-01 Jongmin Seo , Casey Fleeter , Andrew M. Kahn , Alison L. Marsden , Daniele E. Schiavazzi

In stochastic simulation, input uncertainty refers to the propagation of the statistical noise in calibrating input models to impact output accuracy, in addition to the Monte Carlo simulation noise. The vast majority of the input…

统计方法学 · 统计学 2024-03-18 Motong Chen , Henry Lam , Zhenyuan Liu