Technical note: Updating the inverse of the genomic relationship matrix1

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...

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Veröffentlicht in:Journal of animal science 2013-06, Vol.91 (6), p.2583-2586
Hauptverfasser: Meyer, K., Tier, B., Graser, H.-U.
Format: Artikel
Sprache:eng
Schlagworte:
Genomics
Genotype & phenotype
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Zusammenfassung: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