title: Technical note: updating the inverse of the genomic relationship matrix.
abstract: A computing strategy to update the inverse of the genomic relationship matrix when new genotypes become available is described. It is shown that re-using results of previous computations can result in substantial reductions in computing time required. For instance, when the number of individuals increased by about 1% for matrices larger than 15,000, the time required for updating was less than 7% of that used for direct inversion from scratch.
authors.affiliation: Animal Genetics and Breeding Unit, University of New England, Armidale New South Wales 2351, Australia. kmeyer@une.edu.au
authors.forename: K
authors.initials: K
authors.lastname: Meyer
authors.forename: B
authors.initials: B
authors.lastname: Tier
authors.forename: H-U
authors.initials: HU
authors.lastname: Graser
mesh_terms: D000818:Animals; D019295:Computational Biology / Q000379:methods*; D016678:Genome; D005838:Genotype; D058751:Livestock / Q000235:genetics*; D008957:Models, Genetic