Wishart and pseudo-Wishart distributions and some applications to shape theory
Journal of Multivariate Analysis
Singular random matrix decompositions: distributions
Journal of Multivariate Analysis
Predictive inference for singular multivariate elliptically contoured distributions
Journal of Multivariate Analysis
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This paper explains the differences between the densities and the Jacobians of the transforms of the same singular random matrices treated by several authors. Some comments on the results proposed by Srivastava [Singular Wishart and multivariate beta distributions, Ann. Statist. 31 (2003) 1537-1560] are presented. Definitions about a measure with respect to which a singular random matrix possesses a density are proposed. Finally two Jacobians of certain transforms under any of those measures are found.