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Journal of Dairy Science Vol. 65 No. 10 2018-2022
© 1982 by American Dairy Science Association ®
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Computer Algorithm for the Recursive Method of Calculating Large Numerator Relationship Matrices

G.F.S. Hudson, R. L. Quaas and L. D. Van Vleck

Department of Animal Science, Cornell University, Ithaca, NY 14853

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.






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