Results 1 to 10 of about 216,838 (308)

Comparison of Methods to Select Candidates for High-Density Genotyping; Practical Observations in a Cattle Breeding Program

open access: yesAgriculture, 2022
Imputation can be used to obtain a large number of high-density genotypes at the cost of procuring low-density panels. Accurate imputation requires a well-formed reference population of high-density genotypes to enable statistical inference. Five methods
Rudi A. McEwin   +6 more
doaj   +1 more source

Methods to Handle Incomplete Data

open access: yesMAMC Journal of Medical Sciences, 2020
Context: The major question for data analysis is determining the appropriate analytic approach in the presence of incomplete observations. The most common solution to handle missing data in a data set is imputation, where missing values are estimated and
Vinny Johny   +2 more
doaj   +1 more source

A Multilevel Bayesian Approach to Improve Effect Size Estimation in Regression Modeling of Metabolomics Data Utilizing Imputation with Uncertainty

open access: yesMetabolites, 2020
To ensure scientific reproducibility of metabolomics data, alternative statistical methods are needed. A paradigm shift away from the p-value toward an embracement of uncertainty and interval estimation of a metabolite’s true effect size may lead to ...
Christopher E. Gillies   +7 more
doaj   +1 more source

Imputation for Repeated Bounded Outcome Data: Statistical and Machine-Learning Approaches

open access: yesMathematics, 2021
Real-life data are bounded and heavy-tailed variables. Zero-one-inflated beta (ZOIB) regression is used for modelling them. There are no appropriate methods to address the problem of missing data in repeated bounded outcomes.
Urko Aguirre-Larracoechea   +1 more
doaj   +1 more source

K Nearest Neighbor Imputation Performance on Missing Value Data Graduate User Satisfaction

open access: yesJurnal RESTI (Rekayasa Sistem dan Teknologi Informasi), 2022
A missing value is a common problem of most data processing in scientific research, which results in a lack of accuracy of research results. Several methods have been applied as a missing value solution, such as deleting all data that have a missing ...
Abdul Fadlil, Herman, Dikky Praseptian M
doaj   +1 more source

Outcome-sensitive multiple imputation: a simulation study

open access: yesBMC Medical Research Methodology, 2017
Background Multiple imputation is frequently used to deal with missing data in healthcare research. Although it is known that the outcome should be included in the imputation model when imputing missing covariate values, it is not known whether it should
Evangelos Kontopantelis   +3 more
doaj   +1 more source

Evaluation of Odor Prediction Model Performance and Variable Importance according to Various Missing Imputation Methods

open access: yesApplied Sciences, 2022
The aim of this study is to ascertain the most suitable model for predicting complex odors using odor substance data that has a small number of data and a large number of missing data.
Do-Hyun Lee   +3 more
doaj   +1 more source

Bayesian Estimation of Disclosure Risks for Multiply Imputed, Synthetic Data

open access: yesThe Journal of Privacy and Confidentiality, 2014
Agencies seeking to disseminate public use microdata, i.e., data on individual records, can replace confidential values with multiple draws from statistical models estimated with the collected data.
Jerome P. Reiter   +2 more
doaj   +1 more source

Integration of Multimodal Data from Disparate Sources for Identifying Disease Subtypes

open access: yesBiology, 2022
Studies over the past decade have generated a wealth of molecular data that can be leveraged to better understand cancer risk, progression, and outcomes.
Kaiyue Zhou   +5 more
doaj   +1 more source

Evaluating the Accuracy of Imputation Methods in a Five-Way Admixed Population

open access: yesFrontiers in Genetics, 2019
Genotype imputation is a powerful tool for increasing statistical power in an association analysis. Meta-analysis of multiple study datasets also requires a substantial overlap of SNPs for a successful association analysis, which can be achieved by ...
Haiko Schurz   +9 more
doaj   +1 more source

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