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stat.ME2026
An efficient EM algorithm for both element-wise and structural missingness in matrix-variate normal mixture models
Hanzhang Lu, Jeffrey L. Andrews, Ryan P. Browne
Matrix-variate data with missing entries arise frequently in applications where observations are naturally organized as two-dimensional arrays. Although the matrix normal distribut…
stat.ME2026
Robust model-based clustering via mixtures of multivariate pseudo-Voigt distributions
Babak F. Dehkordi, Jeffrey L. Andrews, Andrew Jirasek
We propose a multivariate extension of the pseudo-Voigt profile-a weighted convex combination of Gaussian and Cauchy distributions-within a finite mixture modeling framework for ro…