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st: computing the inverse square root of a matrix


From   Elizabeth Bruch <bruch@stat.ucla.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: computing the inverse square root of a matrix
Date   Tue, 25 Nov 2003 17:43:14 -0800

Hi all,

I need to compute the inverse square root of a dispersion matrix, e.g., X^(-1/2), where X is a square matrix. Does anyone know how to compute the inverse square root of a matrix in Stata? I cannot seem to find any info on this either the programming manual or the matrix information in the User's Guide.

Thanks very much,
Elizabeth Bruch

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Department of Sociology and Statistics
University of California at Los Angeles
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