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Two classes of element-wise transformations preserving the psd nature of coefficient matrices
Authors:Frits E Zegers
Institution:(1) Department of Psychology, University of Groningen, Grote Markt 31/32, 9712 HV Groningen, The Netherlands
Abstract:Two classes of element-wise transformations are proved to preserve the positive semi-definite nature of coefficient matrices. The correctness of a conjecture by Gower and Legendre on the positive semidefinite nature of a certain coefficient matrix is proved. It is shown that the matrix of monotonicity coefficients proposed by Bentler is positive semidefinite for data without ties.
Keywords:Association coefficient  Similarity coefficient  Monotonicity coefficient  Gramian matrix  Binomial series
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