Computer Algorithm for the Recursive Method of Calculating Large Numerator Relationship Matrices

Authors

G. F. S. Hudson, Cornell University
R. L. Quaas, Cornell University
L. Dale Van Vleck, University of Nebraska-LincolnFollow

Date of this Version

February 1982

Comments

Published in J Dairy Sci 1982, 65:2018-2022. Copyright © 1982 The American Dairy Science Association. Used by permission.

Abstract

A method of storing and retrieving nonzero elements of a large, sparse symmetric matrix using only internal computer storage is presented. An algorithm for applying the recursive or tabular method of calculating the numerator relationship matrix of a large group of animals is given. The algorithm is applicable to inbred and noninbred populations and can be used on sire/dam or sire/maternal grandsire pedigrees.