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Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/9871
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dc.contributor.authorMeyer, Karinen
dc.contributor.authorKirkpatrick, Marken
dc.contributor.authorGianola, Danielen
local.source.editorEditor(s): William Pattieen
dc.date.accessioned2012-03-26T18:53:00Z-
dc.date.issued2011-
dc.identifier.citationProceedings of the Association for the Advancement of Animal Breeding and Genetics, v.19, p. 87-90en
dc.identifier.isbn9780646559155en
dc.identifier.issn1328-3227en
dc.identifier.urihttps://hdl.handle.net/1959.11/9871-
dc.description.abstractA simulation study examining the effects of 'regularization' on estimates of genetic covariance matrices for small samples is presented. This is achieved by penalizing the likelihood, and three types of penalties are examined. It is shown that regularized estimation can substantially enhance the accuracy of estimates of genetic parameters. Penalties shrinking estimates of genetic covariances or correlations towards their phenotypic counterparts acted somewhat differently to those aimed reducing the spread of sample eigenvalues. While improvements of estimates were found to be comparable overall, shrinkage of genetic towards phenotypic correlations resulted in least bias.en
dc.languageenen
dc.publisherAssociation for the Advancement of Animal Breeding and Genetics (AAABG)en
dc.relation.ispartofProceedings of the Association for the Advancement of Animal Breeding and Geneticsen
dc.titlePenalized maximum likelihood estimates of genetic covariance matrices with shrinkage towards phenotypic dispersionen
dc.typeConference Publicationen
dc.relation.conferenceAAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Geneticsen
dc.subject.keywordsQuantitative Genetics (incl Disease and Trait Mapping Genetics)en
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnameKarinen
local.contributor.firstnameMarken
local.contributor.firstnameDanielen
local.subject.for2008070201 Animal Breedingen
local.subject.for2008060412 Quantitative Genetics (incl Disease and Trait Mapping Genetics)en
local.subject.seo2008830301 Beef Cattleen
local.profile.schoolAnimal Genetics and Breeding Uniten
local.profile.emailkmeyer@une.edu.auen
local.profile.emaildgianola@une.edu.auen
local.output.categoryE1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20120228-122832en
local.date.conference19th - 21st July, 2011en
local.conference.placePerth, Australiaen
local.publisher.placeArmidale, Australiaen
local.format.startpage87en
local.format.endpage90en
local.peerreviewedYesen
local.identifier.volume19en
local.contributor.lastnameMeyeren
local.contributor.lastnameKirkpatricken
local.contributor.lastnameGianolaen
dc.identifier.staffune-id:kmeyeren
dc.identifier.staffune-id:dgianolaen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:10062en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitlePenalized maximum likelihood estimates of genetic covariance matrices with shrinkage towards phenotypic dispersionen
local.output.categorydescriptionE1 Refereed Scholarly Conference Publicationen
local.relation.urlhttp://trove.nla.gov.au/work/162660639en
local.relation.urlhttp://www.aaabg.org/aaabg19/en
local.conference.detailsAAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics, Perth, Australia, 19th - 21st July, 2011en
local.search.authorMeyer, Karinen
local.search.authorKirkpatrick, Marken
local.search.authorGianola, Danielen
local.uneassociationUnknownen
local.year.published2011en
local.date.start2011-07-19-
local.date.end2011-07-21-
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
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