Results 21 to 30 of about 184,759 (266)

Modern multiple imputation with functional data [PDF]

open access: yesStat, 2021
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 non‐linear models.
Aniruddha Rajendra Rao, Matthew Reimherr
openaire   +3 more sources

Nonparametric Imputation by Data Depth [PDF]

open access: yesJournal of the American Statistical Association, 2019
We present single imputation method for missing values which borrows the idea of data depth---a measure of centrality defined for an arbitrary point of a space with respect to a probability distribution or data cloud. This consists in iterative maximization of the depth of each observation with missing values, and can be employed with any properly ...
Mozharovskyi, Pavlo   +2 more
openaire   +4 more sources

Accuracy of random-forest-based imputation of missing data in the presence of non-normality, non-linearity, and interaction

open access: yesBMC Medical Research Methodology, 2020
Background Missing data are common in statistical analyses, and imputation methods based on random forests (RF) are becoming popular for handling missing data especially in biomedical research.
Shangzhi Hong, Henry S. Lynn
doaj   +1 more source

Fairness in Missing Data Imputation

open access: yesCoRR, 2021
Missing data are ubiquitous in the era of big data and, if inadequately handled, are known to lead to biased findings and have deleterious impact on data-driven decision makings. To mitigate its impact, many missing value imputation methods have been developed.
Yiliang Zhang, Qi Long
openaire   +2 more sources

Comparison of Performance of Data Imputation Methods for Numeric Dataset

open access: yesApplied Artificial Intelligence, 2019
Missing data is common problem faced by researchers and data scientists. Therefore, it is required to handle them appropriately in order to get better and accurate results of data analysis.
Anil Jadhav   +2 more
doaj   +1 more source

Multiple imputation of maritime search and rescue data at multiple missing patterns.

open access: yesPLoS ONE, 2021
Based on the missing situation and actual needs of maritime search and rescue data, multiple imputation methods were used to construct complete data sets under different missing patterns.
Guobo Wang   +4 more
doaj   +1 more source

Data Imputation and Body Weight Variability Calculation Using Linear and Nonlinear Methods in Data Collected From Digital Smart Scales: Simulation and Validation Study

open access: yesJMIR mHealth and uHealth, 2020
BackgroundBody weight variability (BWV) is common in the general population and may act as a risk factor for obesity or diseases. The correct identification of these patterns may have prognostic or predictive value in clinical and research settings. With
Turicchi, Jake   +7 more
doaj   +1 more source

Impact of Missing Data on Data Quality in Social Research

open access: yesСоціологічні студії
Missing data is a common issue in quantitative social research that negatively affects the data quality. This article explores the consequences of missing data, outlining the potential issues it may pose and emphasizing the importance of properly ...
Yaroslav Kostenko
doaj   +1 more source

Multiply-Imputed Synthetic Data: Advice to the Imputer [PDF]

open access: yesJournal of Official Statistics, 2017
Abstract Several statistical agencies have started to use multiply-imputed synthetic microdata to create public-use data in major surveys. The purpose of doing this is to protect the confidentiality of respondents’ identities and sensitive attributes, while allowing standard complete-data analyses of microdata.
Loong, Bronwyn, Rubin, Donald B
openaire   +2 more sources

Context-Aware Data Imputation: Application of Domain-Agnostic Deep Imputation Network

open access: yesIEEE Access
Data imputation (DI) is a crucial task to manage missing data across different domains, such as healthcare and finance. Traditional imputation methods often fail to account for contextual nuances within specific domains due to the heterogeneity of data ...
Mohammed Gh. Al Zamil   +1 more
doaj   +1 more source

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