Discrete alpha-skew-Laplace Distribution
Harandi, S. Shams (University of Isfahan. Department of Statistics)
Alamatsaz, M. H. (University of Isfahan. Department of Statistics)

Data: 2015
Resum: Classical discrete distributions rarely support modelling data on the set of whole integers. In this paper, we shall introduce a flexible discrete distribution on this set, which can, in addition, cover bimodal as well as unimodal data sets. The proposed distribution can also be fitted to positive and negative skewed data. The distribution is indeed a discrete counterpart of the continuous alpha-skew-Laplace distribution recently introduced in the literature. The proposed distribution can also be viewed as a weighted version of the discrete Laplace distribution. Several distributional properties of this class such as cumulative distribution function, moment generating function, moments, modality, infinite divisibility and its truncation are studied. A simulation study is also performed. Finally, a real data set is used to show applicability of the new model comparing to several rival models, such as the discrete normal and Skellam distributions.
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. Creative Commons
Llengua: Anglès.
Document: article ; recerca ; publishedVersion
Matèria: Discrete laplace distribution ; Discretization ; Maximum likelihood estimation ; Uni-bimodality ; Weighted distribution
Publicat a: SORT : statistics and operations research transactions, Vol. 39 Núm. 1 (January-June 2015) , p. 71-84 (Articles) , ISSN 1696-2281

Adreça original: http://www.raco.cat/index.php/SORT/article/view/294378

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