On the substructure controls in rare variant analysis: Principal components or variance components?
Sign Up to like & getrecommendations! Published in 2018 at "Genetic Epidemiology"
DOI: 10.1002/gepi.22102
Abstract: Recent studies showed that population substructure (PS) can have more complex impact on rare variant tests and that similarity‐based collapsing tests (e.g., SKAT) may suffer more severely by PS than burden‐based tests. In this work,… read more here.
Keywords: variance components; substructure; principal components; rare variant ... See more keywords
The estimation of (co)variance components and genetic parameters for growth and wool traits in Harnali sheep
Sign Up to like & getrecommendations! Published in 2021 at "Small Ruminant Research"
DOI: 10.1016/j.smallrumres.2021.106485
Abstract: Abstract The present study was undertaken to estimate (co)variance components and genetic parameters of important growth and wool traits in Harnali sheep using data records of 1862 lambs born to 144 sires and 591 dams… read more here.
Keywords: harnali sheep; wool traits; growth wool; genetic parameters ... See more keywords
Evaluation of alternative methods for estimating the precision of REML-based estimates of variance components and heritability.
Sign Up to like & getrecommendations! Published in 2022 at "Heredity"
DOI: 10.1038/s41437-022-00509-1
Abstract: Residual Maximum Likelihood (REML) analysis is the most widely used method to estimate variance components and heritability. This method is based on large sample theory under the assumption that the parameter estimates are asymptotically multivariate… read more here.
Keywords: reml; components heritability; variance components; sample size ... See more keywords
Variance components and heritability of yield and yield-related traits in tepary bean (Phaseolus acutifolius)
Sign Up to like & getrecommendations! Published in 2019 at "South African Journal of Plant and Soil"
DOI: 10.1080/02571862.2018.1487593
Abstract: The extent of variance and heritability of traits influence the response to selection in crop breeding programs. The objective of this study was to determine variance components and heritability in tepary bean (Phaseolus acutifolius A.Gray)… read more here.
Keywords: variance components; components heritability; yield; tepary bean ... See more keywords
Robust inversion method for jointly estimating parameters and variance components from heterogeneous monitoring data
Sign Up to like & getrecommendations! Published in 2018 at "Inverse Problems in Science and Engineering"
DOI: 10.1080/17415977.2017.1322589
Abstract: Abstract In this paper, a novel inversion method is proposed for jointly robust estimation of parameters and variance components from disjunctive groups of observations affected by outliers. This method, named robust non-negative variance component estimation… read more here.
Keywords: variance components; inversion method; estimation; method ... See more keywords
130 Utilization of Nutrack to Assess Variance Components and Heritability of Activity Traits
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Animal Science"
DOI: 10.1093/jas/skab054.030
Abstract: Overall activity and behavior are integral components of sows remaining productive in the herd. This investigation studied overall activity of group housed replacement gilts and the heritability of various activity traits. Beginning around 20 wk… read more here.
Keywords: nutrack; group; dam; activity ... See more keywords
Is single-step genomic REML with the algorithm for proven and young more computationally efficient when less generations of data are present?
Sign Up to like & getrecommendations! Published in 2022 at "Journal of animal science"
DOI: 10.1093/jas/skac082
Abstract: Efficient computing techniques allow the estimation of variance components for virtually any traditional dataset. When genomic information is available, variance components can be estimated using genomic REML (GREML). If only a portion of the animals… read more here.
Keywords: time; variance; single step; genomic reml ... See more keywords
Stochastic Lanczos estimation of genomic variance components for linear mixed-effects models
Sign Up to like & getrecommendations! Published in 2019 at "BMC Bioinformatics"
DOI: 10.1186/s12859-019-2978-z
Abstract: BackgroundLinear mixed-effects models (LMM) are a leading method in conducting genome-wide association studies (GWAS) but require residual maximum likelihood (REML) estimation of variance components, which is computationally demanding. Previous work has reduced the computational burden… read more here.
Keywords: variance components; estimation; mixed effects; reml ... See more keywords
Variance components due to direct and maternal effects for birth weight of Brown Swiss cattle
Sign Up to like & getrecommendations! Published in 2018 at "Indian Journal of Animal Research"
DOI: 10.18805/ijar.b-1023
Abstract: This study was conducted to estimate variance components and genetic parameters for birth weights of Brown Swiss calves. Experimental data were gathered from the records of a State Farm of Turkey (Konuklar) covering the years… read more here.
Keywords: variance components; direct maternal; components due; variance ... See more keywords
Estimates of Variance Components and Heritability Using Random Regression Models for Semen Traits in Boars
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Genetics"
DOI: 10.3389/fgene.2022.805651
Abstract: It has been proven that the random regression model has a great advantage over the repeatability model in longitudinal data analysis. At present, the random regression model has been used as a standard analysis method… read more here.
Keywords: regression; semen traits; model; variance components ... See more keywords
Examining cross-level effects in dyadic analysis: A structural equation modeling perspective
Sign Up to like & getrecommendations! Published in 2018 at "Behavior Research Methods"
DOI: 10.3758/s13428-018-1117-5
Abstract: The actor–partner interdependence (APIM) and common-fate (CFM) models for dyadic data are well understood and widely applied. The actor and partner coefficients estimated in the APIM reflect the associations between individual-level variance components, whereas the… read more here.
Keywords: variance components; actor partner; level; cross level ... See more keywords