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Handling missing values at test time is challenging for machine learning models, especially when aiming for both high accuracy and interpretability. Established approaches often add bias through imputation or excessive model complexity via…

机器学习 · 计算机科学 2025-05-07 Lena Stempfle , Anton Matsson , Newton Mwai , Fredrik D. Johansson

Boosting has emerged as a useful machine learning technique over the past three decades, attracting increased attention. Most advancements in this area, however, have primarily focused on numerical implementation procedures, often lacking…

统计方法学 · 统计学 2026-02-23 Yuan Bian , Grace Y. Yi , Wenqing He

We study the effects of academic rank using data on the entire population of children enrolled in primary schools in Aberdeen, Scotland, in 1962. Exploiting quasi-random variation in peer group composition, we estimate the causal impact of…

综合经济学 · 经济学 2025-10-15 Emilia Del Bono , Angus Holford , Tommaso Sartori

The imputation of missing values in multivariate time series (MTS) data is critical in ensuring data quality and producing reliable data-driven predictive models. Apart from many statistical approaches, a few recent studies have proposed…

机器学习 · 计算机科学 2023-05-17 Maksims Kazijevs , Manar D. Samad

Missing outcome data is one of the principal threats to the validity of treatment effect estimates from randomized trials. The outcome distributions of participants with missing and observed data are often different, which increases the…

统计方法学 · 统计学 2017-04-06 Iván Díaz , Mark J. van der Laan

Longitudinal studies are often subject to missing data. The ICH E9(R1) addendum addresses the importance of defining a treatment effect estimand with the consideration of intercurrent events. Jump-to-reference (J2R) is one classically…

统计方法学 · 统计学 2023-12-06 Siyi Liu , Shu Yang , Yilong Zhang , Guanghan , Liu

Intensive Longitudinal Data (ILD) is increasingly available to social and behavioral scientists. With this increased availability come new opportunities for modeling and predicting complex biological, behavioral, and physiological…

统计方法学 · 统计学 2025-01-08 Zachary F. Fisher , Younghoon Kim , Barbara Fredrickson , Vladas Pipiras

In the context of mobile sensing environments, various sensors on mobile devices continually generate a vast amount of data. Analyzing this ever-increasing data presents several challenges, including limited access to annotated data and a…

机器学习 · 计算机科学 2023-05-02 Jason Liu , Shohreh Deldari , Hao Xue , Van Nguyen , Flora D. Salim

Assessing the systemic effects of uncertainty that arises from agents' partial observation of the true states of the world is critical for understanding a wide range of scenarios. Yet, previous modeling work on agent learning and…

适应与自组织系统 · 物理学 2022-04-15 Wolfram Barfuss , Richard P. Mann

Researchers often frame quantitative research as objective, but every step in data collection and analysis can bias findings in often unexamined ways. In this investigation, we examined how the process of selecting variables to include in…

物理教育 · 物理学 2021-11-16 Ben Van Dusen , Jayson Nissen

High-dimensional time series data exist in numerous areas such as finance, genomics, healthcare, and neuroscience. An unavoidable aspect of all such datasets is missing data, and dealing with this issue has been an important focus in…

机器学习 · 统计学 2018-02-27 Amin Jalali , Rebecca Willett

This study explores how the Rashomon effect influences variable importance in the context of student demographics used for academic outcomes prediction. Our research follows the way machine learning algorithms are employed in Educational…

计算机与社会 · 计算机科学 2024-12-18 Jakub Kuzilek , Mustafa Çavuş

Predictive models of student success in Massive Open Online Courses (MOOCs) are a critical component of effective content personalization and adaptive interventions. In this article we review the state of the art in predictive models of…

计算机与社会 · 计算机科学 2018-04-23 Josh Gardner , Christopher Brooks

Choosing the right and effective way to assess students is one of the most important tasks of higher education. Many studies have shown that students tend to receive higher scores during their studies when assessed by different study…

计算机与社会 · 计算机科学 2020-09-15 Mohammed A. Alsuwaiket , Anas H. Blasi , Khawla Altarawneh

Science is facing a reproducibility crisis. Previous work has proposed incorporating data analysis replications into classrooms as a potential solution. However, despite the potential benefits, it is unclear whether this approach is…

计算机与社会 · 计算机科学 2024-08-01 Kristina Gligoric , Tiziano Piccardi , Jake Hofman , Robert West

This paper tackles the problem of robust covariance matrix estimation when the data is incomplete. Classical statistical estimation methodologies are usually built upon the Gaussian assumption, whereas existing robust estimation ones assume…

This paper analyzes the effects of educational tracking and the quality of track assignment decisions. We motivate our analysis using a model of optimal track assignment under uncertainty. This model generates predictions about the average…

综合经济学 · 经济学 2025-07-01 Joppe de Ree , Matthijs Oosterveen , Dinand Webbink

Successful modeling of degradation performance data is essential for accurate reliability assessment and failure predictions of highly reliable product units. The degradation performance measurements over time are highly heterogeneous. Such…

应用统计 · 统计学 2021-08-17 Xuxue Sun , Wenjun Cai , Qiong Zhang , Mingyang Li

Imitation learning with a privileged teacher has proven effective for learning complex control behaviors from high-dimensional inputs, such as images. In this framework, a teacher is trained with privileged task information, while a student…

机器人学 · 计算机科学 2025-02-28 Nico Messikommer , Jiaxu Xing , Elie Aljalbout , Davide Scaramuzza

We consider a longitudinal data structure consisting of baseline covariates, time-varying treatment variables, intermediate time-dependent covariates, and a possibly time dependent outcome. Previous studies have shown that estimating the…

统计理论 · 数学 2018-10-09 Linh Tran , Maya Petersen , Joshua Schwab , Mark J van der Laan
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