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Causal inference is a fundamental research topic for discovering the cause-effect relationships in many disciplines. However, not all algorithms are equally well-suited for a given dataset. For instance, some approaches may only be able to…

Multiple imputation provides an effective way to handle missing data. When several possible models are under consideration for the data, the multiple imputation is typically performed under a single-best model selected from the candidate…

统计方法学 · 统计学 2018-11-30 Gyuhyeong Goh , Jae Kwang Kim

This work considers the problem of fitting functional models with sparsely and irregularly sampled functional data. It overcomes the limitations of the state-of-the-art methods, which face major challenges in the fitting of more complex…

统计方法学 · 统计学 2023-05-02 Aniruddha Rajendra Rao , Matthew Reimherr

Analysis of multivariate healthcare time series data is inherently challenging: irregular sampling, noisy and missing values, and heterogeneous patient groups with different dynamics violating exchangeability. In addition, interpretability…

机器学习 · 计算机科学 2023-11-15 Onur Poyraz , Pekka Marttinen

Time series are all around in real-world applications. However, unexpected accidents for example broken sensors or missing of the signals will cause missing values in time series, making the data hard to be utilized. It then does harm to…

机器学习 · 计算机科学 2020-11-24 Chenguang Fang , Chen Wang

Dealing with missing values and incomplete time series is a labor-intensive, tedious, inevitable task when handling data coming from real-world applications. Effective spatio-temporal representations would allow imputation methods to…

机器学习 · 计算机科学 2022-02-11 Andrea Cini , Ivan Marisca , Cesare Alippi

Imputing data is a critical issue for machine learning practitioners, including in the life sciences domain, where missing clinical data is a typical situation and the reliability of the imputation is of great importance. Currently, there…

量子物理 · 物理学 2023-12-13 Skander Kazdaghli , Iordanis Kerenidis , Jens Kieckbusch , Philip Teare

Multivariate categorical data occur in many applications of machine learning. One of the main difficulties with these vectors of categorical variables is sparsity. The number of possible observations grows exponentially with vector length,…

机器学习 · 统计学 2015-03-10 Yarin Gal , Yutian Chen , Zoubin Ghahramani

We present a comprehensive analysis of deep learning approaches for Electronic Health Record (EHR) time-series imputation, examining how architectural and framework biases combine to influence model performance. Our investigation reveals…

机器学习 · 计算机科学 2025-02-05 Linglong Qian , Tao Wang , Jun Wang , Hugh Logan Ellis , Robin Mitra , Richard Dobson , Zina Ibrahim

Data imputation is crucial for addressing challenges posed by missing values in multivariate time series data across various fields, such as healthcare, traffic, and economics, and has garnered significant attention. Among various methods,…

机器学习 · 计算机科学 2025-01-14 Chunjing Xiao , Xue Jiang , Xianghe Du , Wei Yang , Wei Lu , Xiaomin Wang , Kevin Chetty

Medical time series datasets feature missing values that need data imputation methods, however, conventional machine learning models fall short due to a lack of uncertainty quantification in predictions. Among these models, the CATSI…

机器学习 · 计算机科学 2024-10-07 Omkar Kulkarni , Rohitash Chandra

Missing data are ubiquitous in empirical databases, yet statistical analyses typically require complete data matrices. Multiple imputation offers a principled solution for filling these gaps. This study evaluates the performance of several…

统计计算 · 统计学 2026-02-05 Enzo Porto Brasil

Missing values pose a persistent challenge in modern data science. Consequently, there is an ever-growing number of publications introducing new imputation methods in various fields. While many studies compare imputation approaches, they…

统计计算 · 统计学 2025-11-10 Krystyna Grzesiak , Christophe Muller , Julie Josse , Jeffrey Näf

Missing data is a common problem in real-world settings and particularly relevant in healthcare applications where researchers use Electronic Health Records (EHR) and results of observational studies to apply analytics methods. This issue…

机器学习 · 统计学 2018-12-04 Dimitris Bertsimas , Agni Orfanoudaki , Colin Pawlowski

Multivariate density estimation is a popular technique in statistics with wide applications including regression models allowing for heteroskedasticity in conditional variances. The estimation problems become more challenging when…

统计方法学 · 统计学 2018-08-15 Zhen Li , Lili Wu , Weilian Zhou , Sujit Ghosh

Missing data is a common issue in various fields such as medicine, social sciences, and natural sciences, and it poses significant challenges for accurate statistical analysis. Although numerous imputation methods have been proposed to…

统计方法学 · 统计学 2025-07-23 Seongmin Kim , Jeunghun Oh , Hungkuk Ko , Jeongmin Park , Jaeyong Lee

Multiple imputation is a common approach for dealing with missing values in statistical databases. The imputer fills in missing values with draws from predictive models estimated from the observed data, resulting in multiple, completed…

统计计算 · 统计学 2018-08-30 Olanrewaju Akande , Fan Li , Jerome Reiter

Missing observations are common in cluster randomised trials. Approaches taken to handling such missing data include: complete case analysis, single-level multiple imputation that ignores the clustering, multiple imputation with a fixed…

统计方法学 · 统计学 2014-07-18 Karla Diaz-Ordaz , Michael G. Kenward , Manuel Gomes , Richard Grieve

We present a personalized and reliable prediction model for healthcare, which can provide individually tailored medical services such as diagnosis, disease treatment, and prevention. Our proposed framework targets at making personalized and…

机器学习 · 统计学 2019-11-26 Ingyo Chung , Saehoon Kim , Juho Lee , Kwang Joon Kim , Sung Ju Hwang , Eunho Yang

Electronic health records (EHR) consist of longitudinal clinical observations portrayed with sparsity, irregularity, and high-dimensionality, which become major obstacles in drawing reliable downstream clinical outcomes. Although there…

机器学习 · 计算机科学 2020-11-17 Ahmad Wisnu Mulyadi , Eunji Jun , Heung-Il Suk