Technical note: Updating the inverse of the genomic relationship matrix1

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 inc...

Full description

Saved in:
Bibliographic Details
Published in:Journal of animal science 2013-06, Vol.91 (6), p.2583-2586
Main Authors: Meyer, K., Tier, B., Graser, H.-U.
Format: Article
Language:English
Subjects:
Genomics
Genotype & phenotype
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. [PUBLICATION ABSTRACT]
ISSN:0021-8812
1525-3163
DOI:10.2527/jas.2012-6056