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Imputation is an attractive tool for dealing with the widespread issue of missing values. Consequently, studying and developing imputation methods has been an active field of research over the last decade. Faced with an imputation task and…

统计方法学 · 统计学 2025-07-16 Jeffrey Näf , Krystyna Grzesiak , Erwan Scornet

Data imputation addresses the challenge of imputing missing values in database instances, ensuring consistency with the overall semantics of the dataset. Although several heuristics which rely on statistical methods, and ad-hoc rules have…

人工智能 · 计算机科学 2024-10-22 Jiang Hua , Michael Bewong , Selasi Kwashie , MD Geaur Rahman , Junwei Hu , Xi Guo , Zaiwen Fen

The human brain can be conceptualized as a dynamical system. Utilizing resting state fMRI time series imaging, we can study the underlying dynamics at ear-marked Regions of Interest (ROIs) to understand structure or lack thereof. This…

计算机视觉与模式识别 · 计算机科学 2023-12-01 Ninad Aithal , Chakka Sai Pradeep , Neelam Sinha

Gaussian Graphical Models (GGM) are popularly used in neuroimaging studies based on fMRI, EEG or MEG to estimate functional connectivity, or relationships between remote brain regions. In multi-subject studies, scientists seek to identify…

统计方法学 · 统计学 2017-05-01 Manjari Narayan , Genevera I. Allen , Steffie Tomson

Time-series data with missing values are commonly encountered in many fields, such as healthcare, meteorology, and robotics. The imputation aims to fill the missing values with valid values. Most imputation methods trained the models…

机器学习 · 计算机科学 2024-11-21 Tae-Min Choi , Ji-Su Kang , Jong-Hwan Kim

In the context of multivariate nonparametric regression with missing covariates, we propose Pattern Embedded Neural Networks (PENNs), which can be applied in conjunction with any existing imputation technique. In addition to a neural…

统计方法学 · 统计学 2025-04-30 Tianyi Ma , Tengyao Wang , Richard J. Samworth

Recent advances in deep learning have achieved impressive gains in classification accuracy on a variety of types of data, including images and text. Despite these gains, however, concerns have been raised about the calibration, robustness,…

机器学习 · 计算机科学 2018-11-20 Dallas Card , Michael Zhang , Noah A. Smith

In recent years, deep learning models have been applied to neuroimaging data for early diagnosis of Alzheimer's disease (AD). Structural magnetic resonance imaging (sMRI) and positron emission tomography (PET) images provide structural and…

图像与视频处理 · 电气工程与系统科学 2023-08-01 Yanteng Zhanga , Xiaohai He , Yi Hao Chan , Qizhi Teng , Jagath C. Rajapakse

Analysis of the fairness of machine learning (ML) algorithms recently attracted many researchers' interest. Most ML methods show bias toward protected groups, which limits the applicability of ML models in many applications like crime rate…

机器学习 · 计算机科学 2022-11-03 Haris Mansoor , Sarwan Ali , Shafiq Alam , Muhammad Asad Khan , Umair ul Hassan , Imdadullah Khan

Purpose: In diffusion MRI (dMRI), the volumetric and bundle analyses of whole-brain tissue microstructure and connectivity can be severely impeded by an incomplete field-of-view (FOV). This work aims to develop a method for imputing the…

This article introduces a predictor-dependent joint modeling framework for network data obtained from multiple subjects over a shared set of nodes with spatial co-ordinates and spatially correlated nodal attributes. The framework is highly…

Clinical decision support using data mining techniques offers more intelligent way to reduce the decision error in the last few years. However, clinical datasets often suffer from high missingness, which adversely impacts the quality of…

机器学习 · 计算机科学 2020-11-20 Xuetong Wu , Hadi Akbarzadeh Khorshidi , Uwe Aickelin , Zobaida Edib , Michelle Peate

Missing data is a common problem in clinical data collection, which causes difficulty in the statistical analysis of such data. To overcome problems caused by incomplete data, we propose a new imputation method called projective resampling…

统计方法学 · 统计学 2021-06-17 Zishu Zhan , Xiangjie Li , Jingxiao Zhang

This paper presents a comprehensive and quality collection of functional human brain network data for potential research in the intersection of neuroscience, machine learning, and graph analytics. Anatomical and functional MRI images have…

Deep learning-based models in medical imaging often struggle to generalize effectively to new scans due to data heterogeneity arising from differences in hardware, acquisition parameters, population, and artifacts. This limitation presents…

图像与视频处理 · 电气工程与系统科学 2023-08-09 Sebastian Nørgaard Llambias , Mads Nielsen , Mostafa Mehdipour Ghazi

Generalization, the ability to perform well beyond the training context, is a hallmark of biological and artificial intelligence, yet anticipating unseen failures remains a central challenge. Conventional approaches often take a…

机器学习 · 计算机科学 2026-03-03 Chi-Ning Chou , Artem Kirsanov , Yao-Yuan Yang , SueYeon Chung

The integrity of time series data in smart grids is often compromised by missing values due to sensor failures, transmission errors, or disruptions. Gaps in smart meter data can bias consumption analyses and hinder reliable predictions,…

人工智能 · 计算机科学 2025-02-21 Amir Sartipi , Joaquín Delgado Fernández , Sergio Potenciano Menci , Alessio Magitteri

Human brains lie at the core of complex neurobiological systems, where the neurons, circuits, and subsystems interact in enigmatic ways. Understanding the structural and functional mechanisms of the brain has long been an intriguing pursuit…

神经元与认知 · 定量生物学 2022-07-26 Hejie Cui , Wei Dai , Yanqiao Zhu , Xiaoxiao Li , Lifang He , Carl Yang

Background: Existing guidelines for handling missing data are generally not consistent with the goals of prediction modelling, where missing data can occur at any stage of the model pipeline. Multiple imputation (MI), often heralded as the…

统计方法学 · 统计学 2022-06-27 Rose Sisk , Matthew Sperrin , Niels Peek , Maarten van Smeden , Glen P. Martin

Deep learning models have shown their advantage in many different tasks, including neuroimage analysis. However, to effectively train a high-quality deep learning model, the aggregation of a significant amount of patient information is…

机器学习 · 计算机科学 2020-12-08 Xiaoxiao Li , Yufeng Gu , Nicha Dvornek , Lawrence Staib , Pamela Ventola , James S. Duncan