Browsing Research Articles (Statistics) by UP Author "Arashi, Mohammad"

Browsing Research Articles (Statistics) by UP Author "Arashi, Mohammad"

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  • A synergetic R-Shiny portal for modeling and tracking of COVID-19 data 
    Salehi, Mahdi; Arashi, Mohammad; Bekker, Andriette, 1958-; Ferreira, Johannes Theodorus; Chen, Ding-Geng (Din); Esmaeili, Foad; Frances, Motala (Frontiers Media, 2020-01)
    The purpose of this paper is to introduce a useful online interactive dashboard (https://mahdisalehi.shinyapps.io/Covid19Dashboard/) that visualize and follow confirmed cases of COVID-19 in real-time. The dashboard was ...
  • A theoretical framework for Landsat data modeling based on the matrix variate mean-mixture of normal model 
    Naderi, Mehrdad; Bekker, Andriette, 1958-; Arashi, Mohammad; Jamalizadeh, Ahad (Public Library of Science, 2020-04-09)
    This paper introduces a new family of matrix variate distributions based on the mean-mixture of normal (MMN) models. The properties of the new matrix variate family, namely stochastic representation, moments and ...
  • Weighted distributions of eigenvalues 
    Arashi, Mohammad; Bekker, Andriette, 1958-; Van Niekerk, Janet (Elsevier, 2019-01)
    In this article, the weighted version of a probability density function is considered as a mapping of the original distribution. Generally, the properties of the distribution of a random matrix and the distributions of its ...
  • Weighted-type Wishart distributions with application 
    Arashi, Mohammad; Bekker, Andriette, 1958-; Van Niekerk, Janet (National Statistical Institute of Portugal, 2017)
    In this paper, we consider a general framework for constructing new valid densities regarding a random matrix variate. However, we focus speci cally on the Wishart distribution. The methodology involves coupling the ...
  • Wishart distributions : advances in theory with Bayesian application 
    Bekker, Andriette, 1958-; Van Niekerk, Janet; Arashi, Mohammad (Elsevier, 2017-03)
    In this paper, we generalize the Wishart distribution utilizing a fresh approach that leads to the hypergeometric Wishart generator distribution with the Wishart generator and the Wishart as special cases. Important ...
  • Wishart ratios with dependent structure : new members of the bimatrix beta type IV 
    Bekker, Andriette, 1958-; Roux, Jacobus J.J.; Arashi, Mohammad (Elsevier, 2011-12)
    In multivariate statistics under normality, the problems of interest are random covariance matrices (known as Wishart matrices) and "ratios" of Wishart matrices that arise in multivariate analysis of variance (MANOVA). ...