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Differential item functioning (DIF) detection is an important yet understudied problem in computerized adaptive testing (CAT). In this article, we proposed a two-level logistic model to improve DIF detection in CAT by explicitly accounting…

应用统计 · 统计学 2026-05-05 Dandan Chen Kaptur , Justin Kern , Chingwei David Shin , Jinming Zhang

Unsupervised monocular depth estimation has received widespread attention because of its capability to train without ground truth. In real-world scenarios, the images may be blurry or noisy due to the influence of weather conditions and…

计算机视觉与模式识别 · 计算机科学 2025-10-29 Runze Liu , Dongchen Zhu , Guanghui Zhang , Yue Xu , Wenjun Shi , Xiaolin Zhang , Lei Wang , Jiamao Li

The challenge of electronic component obsolescence is particularly critical in systems with long life cycles. Various obsolescence management methods are employed to mitigate its impact, with obsolescence forecasting being a highly…

机器学习 · 计算机科学 2025-05-05 Elie Saad , Mariem Besbes , Marc Zolghadri , Victor Czmil , Claude Baron , Vincent Bourgeois

Quantifying the value of the information extracted from a structural health monitoring (SHM) system is an important step towards convincing decision makers to implement these systems. We quantify this value by adaptation of the Bayesian…

应用统计 · 统计学 2022-10-06 Antonios Kamariotis , Eleni Chatzi , Daniel Straub

Machine Learning (ML) is increasingly being used for computer aided diagnosis of brain related disorders based on structural magnetic resonance imaging (MRI) data. Most of such work employs biologically and medically meaningful hand-crafted…

机器学习 · 计算机科学 2018-05-04 Ayush Jaiswal , Dong Guo , Cauligi S. Raghavendra , Paul Thompson

Surgical Site Infection (SSI) is a national priority in healthcare research. Much research attention has been attracted to develop better SSI risk prediction models. However, most of the existing SSI risk prediction models are built on…

机器学习 · 计算机科学 2016-11-15 Chuyang Ke , Yan Jin , Heather Evans , Bill Lober , Xiaoning Qian , Ji Liu , Shuai Huang

The time-frequency map (TFM) is frequently used in condition monitoring, necessitating further processing to select an informative frequency band (IFB) or directly detect damage. However, selecting an IFB is challenging due to the…

信号处理 · 电气工程与系统科学 2026-04-28 Anna Michalak , Justyna Hebda-Sobkowicz , Anil Kumar , Radoslaw Zimroz , Rafal Zdunek , Agnieszka Wylomanska

Damage detection in active-sensing, guided-waves-based Structural Health Monitoring (SHM) has evolved through multiple eras of development during the past decades. Nevertheless, there still exists a number of challenges facing the current…

信号处理 · 电气工程与系统科学 2021-06-29 Ahmad Amer , Fotis Kopsaftopoulos

Monitoring machine learning models once they are deployed is challenging. It is even more challenging to decide when to retrain models in real-case scenarios when labeled data is beyond reach, and monitoring performance metrics becomes…

机器学习 · 计算机科学 2022-11-23 Carlos Mougan , Dan Saattrup Nielsen

Timely prediction of clinically critical events in Intensive Care Unit (ICU) is important for improving care and survival rate. Most of the existing approaches are based on the application of various classification methods on explicitly…

计算机视觉与模式识别 · 计算机科学 2018-12-05 Jwala Dhamala , Emmanuel Azuh , Abdullah Al-Dujaili , Jonathan Rubin , Una-May O'Reilly

Dynamic models have been successfully used in producing estimates of HIV epidemics at national level, due to their epidemiological nature and their ability to simultaneously estimate prevalence, incidence, and mortality rates. Recently, HIV…

统计方法学 · 统计学 2016-02-19 Le Bao , Ben Sheng , Xiaoyue Niu , Yuan Tang , Tim Brown , Peter D. Ghys , Jeff W. Eaton

Score matching with Langevin dynamics (SMLD) method has been successfully applied to accelerated MRI. However, the hyperparameters in the sampling process require subtle tuning, otherwise the results can be severely corrupted by…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Xiaoyu Qiao , Weisheng Li , Bin Xiao , Yuping Huang , Lijian Yang

We propose a general dynamic reduced-order modeling framework for typical experimental data: time-resolved sensor data and optional non-time-resolved PIV snapshots. This framework contains four steps. First, the sensor signals are lifted to…

流体动力学 · 物理学 2018-05-09 Jean-Christophe Loiseau , Bernd R. Noack , Steven L. Brunton

Forecasting the degradation of coated materials has long been a topic of critical interest in engineering, as it has enormous implications for both system maintenance and sustainable material use. Material degradation is affected by many…

应用统计 · 统计学 2025-04-15 Matthew Repasky , Henry Yuchi , Fritz Friedersdorf , Yao Xie

In this work, an innovative data-driven moving horizon state estimation is proposed for model dynamic-unknown systems based on Bayesian optimization. As long as the measurement data is received, a locally linear dynamics model can be…

系统与控制 · 电气工程与系统科学 2023-11-14 Qing Sun , Shuai Niu , Minrui Fei

High-dimensional functional time series offers a powerful framework for extending functional time series analysis to settings with multiple simultaneous dimensions, capturing both temporal dynamics and cross-sectional dependencies. We…

统计方法学 · 统计学 2025-12-08 Haixu Wang , Tianyu Guan , Han Lin Shang

Complex systems such as aircraft engines, turbines, and industrial machinery often operate under dynamically changing conditions. These varying operating conditions can substantially influence degradation behavior and make prognostic…

机器学习 · 计算机科学 2026-04-14 Yuqi Su , Xiaolei Fang

Monitoring bridge health using vibrations of drive-by vehicles has various benefits, such as no need for directly installing and maintaining sensors on the bridge. However, many of the existing drive-by monitoring approaches are based on…

人工智能 · 计算机科学 2023-05-18 Jingxiao Liu , Susu Xu , Mario Bergés , Hae Young Noh

With the wide application of electronic health records (EHR) in healthcare facilities, health event prediction with deep learning has gained more and more attention. A common feature of EHR data used for deep-learning-based predictions is…

机器学习 · 计算机科学 2021-12-17 Chang Lu , Tian Han , Yue Ning

This study proposes an unsupervised sequence-to-sequence learning approach that automatically assesses the motion-induced reliability degradation of the cardiac volume signal (CVS) in multi-channel electrical impedance-based hemodynamic…

信号处理 · 电气工程与系统科学 2023-05-18 Chang Min Hyun , Tae-Geun Kim , Kyounghun Lee