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Unmeasured, spatially-structured factors can confound associations between spatial environmental exposures and health outcomes. Adding flexible splines to a regression model is a simple approach for spatial confounding adjustment, but the…

应用统计 · 统计学 2020-06-22 Joshua P. Keller , Adam A. Szpiro

This paper proposes a new approach to address the problem of unmeasured confounding in spatial designs. Spatial confounding occurs when some confounding variables are unobserved and not included in the model, leading to distorted…

统计方法学 · 统计学 2025-03-05 Carlo Zaccardi , Pasquale Valentini , Luigi Ippoliti , Alexandra M. Schmidt

The elderly population is increasing rapidly around the world. There are no enough caretakers for them. Use of AI-based in-home medical care systems is gaining momentum due to this. Human fall detection is one of the most important tasks of…

计算机视觉与模式识别 · 计算机科学 2024-01-04 Ekram Alam , Abu Sufian , Paramartha Dutta , Marco Leo

Quantitative estimation of human joint motion in daily living spaces is essential for early detection and rehabilitation tracking of neuromusculoskeletal disorders (e.g., Parkinson's) and mitigating trip and fall risks for older adults.…

人机交互 · 计算机科学 2025-03-24 Yiwen Dong , Jessica Rose , Hae Young Noh

Statistical models used to estimate the spatio-temporal pattern in disease risk from areal unit data represent the risk surface for each time period with known covariates and a set of spatially smooth random effects. The latter act as a…

应用统计 · 统计学 2016-04-19 Alastair Rushworth , Duncan Lee , Christophe Sarran

Survivors of central nervous system injury commonly present with spastic hypertonia. The affected muscles are hyperexcitable and can display involuntary static muscle tone and an exaggerated stretch reflex. These symptoms affect posture and…

It is well recognized that the relative position of the center of mass (pCOM) with respect to the base of support (BOS) is a determining factor in the maintenance of balance. However, during gait the dynamic nature of the BOS is not well…

医学物理 · 物理学 2017-06-28 Timothy Niiler , John Henley , Freeman Miller

Full 3D inversion of time-domain Airborne ElectroMagnetic (AEM) data requires specialists' expertise and a tremendous amount of computational resources, not readily available to everyone. Consequently, quasi-2D/3D inversion methods are…

地球物理 · 物理学 2022-11-18 Wouter Deleersnyder , David Dudal , Thomas Hermans

The central nervous system exploits anticipatory (APAs) and compensatory (CPAs) postural adjustments to maintain the balance.The postural adjustments comprising stability of the center of mass (CoM) and the pressure distribution of the body…

机器人学 · 计算机科学 2023-01-02 Tugce Ersoy , Elif Hocaoglu

Balance is the fundamental skill behind human locomotion, and its impairment is the principal indicator of self-perceived disability. Despite significant improvements in balance assessment, there is still large incidence of fall related…

机器人学 · 计算机科学 2018-09-05 Carlo Tiseo , Ming Jeat Foo , Kalyana C Veluvolu , Wei Tech Ang

A child is considered to have faltered growth when increases in their height or weight starts to decline relative to a suitable comparison population. However, there is currently a lack of consensus on both the choice of anthropometric…

应用统计 · 统计学 2018-12-17 Jarod Y. L. Lee , Craig Anderson , Wai T. Hung , Hon Hwang , Louise M. Ryan

The problem of class imbalance is extensive for focusing on numerous applications in the real world. In such a situation, nearly all of the examples are labeled as one class called majority class, while far fewer examples are labeled as the…

Modern earthwork compaction rollers collect location and compaction information as they traverse a compaction site. These roller measurement values present a challenging spatio-temporal statistical problem that requires careful…

应用统计 · 统计学 2013-03-21 Daniel K. Heersink , Reinhard Furrer , Mike A. Mooney

Learning from imbalanced data is a challenging task. Standard classification algorithms tend to perform poorly when trained on imbalanced data. Some special strategies need to be adopted, either by modifying the data distribution or by…

机器学习 · 计算机科学 2022-08-26 Asif Newaz , Shahriar Hassan , Farhan Shahriyar Haq

Data imbalance is common in production data, where controlled production settings require data to fall within a narrow range of variation and data are collected with quality assessment in mind, rather than data analytic insights. This…

机器学习 · 统计学 2021-12-17 Rune D. Kjærsgaard , Manja G. Grønberg , Line K. H. Clemmensen

Many real-world classification problems are significantly class-imbalanced to detriment of the class of interest. The standard set of proper evaluation metrics is well-known but the usual assumption is that the test dataset imbalance equals…

机器学习 · 计算机科学 2020-04-16 Jan Brabec , Tomáš Komárek , Vojtěch Franc , Lukáš Machlica

Propensity score matching is a common tool for adjusting for observed confounding in observational studies, but is known to have limitations in the presence of unmeasured confounding. In many settings, researchers are confronted with…

统计方法学 · 统计学 2017-12-08 Georgia Papadogeorgou , Christine Choirat , Corwin Zigler

Gait asymmetry, a consequence of various neurological or physical conditions such as aging and stroke, detrimentally impacts bipedal locomotion, causing biomechanical alterations, increasing the risk of falls and reducing quality of life.…

机器人学 · 计算机科学 2025-02-07 Mahdi Chalaki , Abed Soleymani , Xingyu Li , Vivian Mushahwar , Mahdi Tavakoli

Accurately predicting the 3D human posture and the pressure exerted on the body for people resting in bed, visualized as a body mesh (3D pose & shape) with a 3D pressure map, holds significant promise for healthcare applications,…

计算机视觉与模式识别 · 计算机科学 2024-04-05 Abhishek Tandon , Anujraaj Goyal , Henry M. Clever , Zackory Erickson

The propensity score is widely used for causal inference in observational studies, but common parametric estimators can produce biased and inefficient effect estimates when model assumptions are violated. Nonparametric approaches reduce…

统计方法学 · 统计学 2026-04-09 Maosen Peng , Yan Li , Chong Wu , Liang Li