4 papers
Random Linear Modulation with Spherically Symmetric Modulators
Armine Bagyan, Donald Richards
We consider the modulation of data given by random vectors , . For each , one chooses an independent modulating random vector $Î_n…
A Tribute to Richard Askey, and an Expansive View of Some of his Favorite Beta Integrals
Donald Richards
This article represents a personal tribute to Richard Askey together with a new look at some of his favorite integrals, including the Cauchy beta integral. The article also provide…
Hyperdeterminantal Total Positivity
Kenneth W. Johnson, Donald St. P. Richards
For a given positive integer , the concept of hyperdeterminantal total positivity is defined for a kernel , thereby generalizing the cl…
EM Estimation of the B-Spline Copula with Penalized Pseudo-Likelihood Functions
Xiaoling Dou, Satoshi Kuriki, Gwo Dong Lin +1
The B-spline copula function is defined by a linear combination of elements of the normalized B-spline basis. We develop a modified EM algorithm, to maximize the penalized pseudo-l…