Matrix variate skew laplace distribution
1Department of Statistics, Eskişehir Osmangazi University, Eskişehir, 26040, Türkiye
2Department of Statistics, Ankara University, Ankara, 06100, Türkiye
2Department of Statistics, Ankara University, Ankara, 06100, Türkiye
Sigma J Eng Nat Sci 2024; 42(3): 854-861 DOI: 10.14744/sigma.2024.00076
Abstract
In this study, we introduce a matrix variate skew Laplace distribution as a variance-mean mix-ture of the matrix variate normal and the scale inverse gamma distribution. The proposed distribution is a generalization of the multivariate skew Laplace distribution studied by [1]. We explore some distributional properties of the proposed distribution such as the probability density function and the characteristic function. Also, we study the estimation of the parame-ters and give an EM algorithm to obtain the estimates of the parameters. Then, we give a small simulation study to illustrate the performance of the proposed EM algorithm for finding the estimates.
Keywords: EM Algorithm; Matrix Variate Distribution; Normal Variance-Mean Mixture; Skew Distribution; Multivariate Laplace Distribution