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https://hdl.handle.net/1959.11/14325
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Meyer, Karin | en |
local.source.editor | Editor(s): Nicolas Lopez Villalobos | en |
dc.date.accessioned | 2014-03-24T11:43:00Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.20, p. 428-431 | en |
dc.identifier.isbn | 9780473260569 | en |
dc.identifier.issn | 1328-3227 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/14325 | - |
dc.description.abstract | Penalized maximum likelihood estimation has been advocated for its capability to yield substantially improved estimates of covariance matrices, but so far only cases with equal numbers of records have been considered. We show that a generalization of the inverse Wishart distribution can be utilised to derive penalties which allow for differential penalization for different blocks of the matrices to be estimated. However, this requires multiple tuning factors to be determined and thus can increase computational requirements markedly. Simulation results are presented which indicate that the additional gains obtainable for estimates of genetic covariance components - over and above those from a simple, non-differential scheme - are moderate, even if numbers of records for different traits differ by orders of magnitude. | en |
dc.language | en | en |
dc.publisher | Association for the Advancement of Animal Breeding and Genetics (AAABG) | en |
dc.relation.ispartof | Proceedings of the Association for the Advancement of Animal Breeding and Genetics | en |
dc.title | Penalized Estimation of Covariance Matrices with Flexible Amounts of Shrinkage | en |
dc.type | Conference Publication | en |
dc.relation.conference | AAABG 2013: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action | en |
dc.subject.keywords | Genetics | en |
local.contributor.firstname | Karin | en |
local.subject.for2008 | 060499 Genetics not elsewhere classified | en |
local.subject.seo2008 | 830399 Livestock Raising not elsewhere classified | en |
local.profile.school | Animal Genetics and Breeding Unit | en |
local.profile.email | kmeyer@une.edu.au | en |
local.output.category | E1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20140312-115519 | en |
local.date.conference | 20th - 23rd October, 2013 | en |
local.conference.place | Napier, New Zealand | en |
local.publisher.place | Armidale, Australia | en |
local.format.startpage | 428 | en |
local.format.endpage | 431 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 20 | en |
local.contributor.lastname | Meyer | en |
dc.identifier.staff | une-id:kmeyer | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:14540 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Penalized Estimation of Covariance Matrices with Flexible Amounts of Shrinkage | en |
local.output.categorydescription | E1 Refereed Scholarly Conference Publication | en |
local.relation.url | http://www.aaabg.org/aaabghome/proceedings20.php | en |
local.conference.details | AAABG 2013: 20th Conference of the Association for the Advancement of Animal Breeding and Genetics: Translating Science into Action, Napier, New Zealand, 20th - 23rd October, 2013 | en |
local.search.author | Meyer, Karin | en |
local.uneassociation | Unknown | en |
local.year.published | 2013 | en |
local.subject.for2020 | 310599 Genetics not elsewhere classified | en |
local.subject.seo2020 | 100407 Insects | en |
local.date.start | 2013-10-20 | - |
local.date.end | 2013-10-23 | - |
Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
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