Application of vec and vech operators to a multivariate mixed sire model


Firat M.

TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES, vol.22, no.3, pp.255-256, 1998 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 3
  • Publication Date: 1998
  • Title of Journal : TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES
  • Page Numbers: pp.255-256

Abstract

The vec operator of a matrix X consists of stacking columns of X one under another in a single vector. The vech operator of a square matrix X is obtained in the same way that vecX is defined, but it starts each column at its diagonal element. The objective of this paper is to describe vec and vech operators and apply them to a multivariate mixed sire model.