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The use of supervised deep learning techniques to detect pathologies in brain MRI scans can be challenging due to the diversity of brain anatomy and the need for annotated data sets. An alternative approach is to use unsupervised anomaly…

图像与视频处理 · 电气工程与系统科学 2023-03-08 Finn Behrendt , Debayan Bhattacharya , Julia Krüger , Roland Opfer , Alexander Schlaefer

Accurate and reproducible brain morphometry from structural MRI is critical for monitoring neuroanatomical changes across time and across imaging domains. Although deep learning has accelerated segmentation workflows, scanner-induced…

计算机视觉与模式识别 · 计算机科学 2025-04-23 Ekaterina Kondrateva , Sandzhi Barg , Mikhail Vasiliev

Effective data imputation demands rich latent ``structure" discovery capabilities from ``plain" tabular data. Recent advances in graph neural networks-based data imputation solutions show their strong structure learning potential by…

机器学习 · 计算机科学 2024-04-16 Jiajun Zhong , Weiwei Ye , Ning Gui

This paper investigates a missing feature imputation problem for graph learning tasks. Several methods have previously addressed learning tasks on graphs with missing features. However, in cases of high rates of missing features, they were…

机器学习 · 计算机科学 2023-05-30 Daeho Um , Jiwoong Park , Seulki Park , Jin Young Choi

Biomarkers are often measured in bulk to diagnose patients, monitor patient conditions, and research novel drug pathways. The measurement of these biomarkers often suffers from detection limits that result in missing and untrustworthy…

统计方法学 · 统计学 2023-06-13 Alton Barbehenn , Sihai Dave Zhao

While graph convolution based methods have become the de-facto standard for graph representation learning, their applications to disease prediction tasks remain quite limited, particularly in the classification of neurodevelopmental and…

计算机视觉与模式识别 · 计算机科学 2023-11-17 Ibrahim Salim , A. Ben Hamza

Missing data is a fundamental challenge in data science, significantly hindering analysis and decision-making across a wide range of disciplines, including healthcare, bioinformatics, social science, e-commerce, and industrial monitoring.…

机器学习 · 统计学 2026-05-12 Jicong Fan

Data imputation is an effective way to handle missing data, which is common in practical applications. In this study, we propose and test a novel data imputation process that achieve two important goals: (1) preserve the row-wise…

机器学习 · 计算机科学 2023-09-13 Katrina Chen , Xiuqin Liang , Zheng Ma , Zhibin Zhang

In this paper, we aim to address a significant challenge in the field of missing data imputation: identifying and leveraging the interdependencies among features to enhance missing data imputation for tabular data. We introduce a novel…

机器学习 · 计算机科学 2024-11-08 Zhaoyang Zhang , Hongtu Zhu , Ziqi Chen , Yingjie Zhang , Hai Shu

Fairness evaluation in face analysis systems (FAS) typically depends on automatic demographic attribute inference (DAI), which itself relies on predefined demographic segmentation. However, the validity of fairness auditing hinges on the…

计算机视觉与模式识别 · 计算机科学 2025-10-24 Alexandre Fournier-Montgieux , Hervé Le Borgne , Adrian Popescu , Bertrand Luvison

Contaminant observations and outliers often cause problems when estimating the parameters of cognitive models, which are statistical models representing cognitive processes. In this study, we test and improve the robustness of parameter…

机器学习 · 统计学 2025-11-13 Yufei Wu , Stefan T. Radev , Francis Tuerlinckx

Magnetic resonance imaging (MRI) is a powerful and versatile imaging technique, offering a wide spectrum of information about the anatomy by employing different acquisition modalities. However, in the clinical workflow, it is impractical to…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Yicheng Wu , Tao Song , Zhonghua Wu , Jin Ye , Zongyuan Ge , Wenjia Bai , Zhaolin Chen , Jianfei Cai

Multivariate machine learning methods are increasingly used to analyze neuroimaging data, often replacing more traditional "mass univariate" techniques that fit data one voxel at a time. In the functional magnetic resonance imaging (fMRI)…

The challenge of handling missing data is widespread in modern data analysis, particularly during the preprocessing phase and in various inferential modeling tasks. Although numerous algorithms exist for imputing missing data, the…

统计方法学 · 统计学 2024-03-28 Marcos Matabuena , Carla Díaz-Louzao , Rahul Ghosal , Francisco Gude

Magnetic Resonance Imaging (MRI) of the brain has been used to investigate a wide range of neurological disorders, but data acquisition can be expensive, time-consuming, and inconvenient. Multi-site studies present a valuable opportunity to…

计算机视觉与模式识别 · 计算机科学 2018-04-13 Harrison Nguyen , Richard W. Morris , Anthony W. Harris , Mayuresh S. Korgoankar , Fabio Ramos

Resting-state functional magnetic resonance imaging (rsfMRI) is a powerful tool for investigating the relationship between brain function and cognitive processes as it allows for the functional organization of the brain to be captured…

机器学习 · 计算机科学 2025-02-25 Bishal Thapaliya , Esra Akbas , Jiayu Chen , Raam Sapkota , Bhaskar Ray , Pranav Suresh , Vince Calhoun , Jingyu Liu

Significant progress has been made using fMRI to characterize the brain changes that occur in ASD, a complex neuro-developmental disorder. However, due to the high dimensionality and low signal-to-noise ratio of fMRI, embedding informative…

图像与视频处理 · 电气工程与系统科学 2019-08-15 Xiaoxiao Li , Nicha C. Dvornek , Juntang Zhuang , Pamela Ventola , James Duncan

Resting-state functional MRI (rs-fMRI) in functional neuroimaging techniques have improved in brain disorders, dysfunction studies via mapping the topology of the brain connections, i.e. connectopic mapping. Since, there are the slight…

图像与视频处理 · 电气工程与系统科学 2019-07-18 Jalal Mirakhorli , Hamidreza Amindavar , Mojgan Mirakhorli

Graph neural networks (GNNs) have demonstrated success in learning representations of brain graphs derived from functional magnetic resonance imaging (fMRI) data. However, existing GNN methods assume brain graphs are static over time and…

机器学习 · 计算机科学 2023-07-11 Alexander Campbell , Antonio Giuliano Zippo , Luca Passamonti , Nicola Toschi , Pietro Lio

Datasets with missing values are very common on industry applications, and they can have a negative impact on machine learning models. Recent studies introduced solutions to the problem of imputing missing values based on deep generative…

机器学习 · 计算机科学 2019-02-28 Ramiro D. Camino , Christian A. Hammerschmidt , Radu State