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Articles, 5 records found

Articles	5 records found

24 p, 260.6 KB

Compound distributions motivated by linear failure rate / Gitifar, Narjes (Amirkabir University of Technology (Teheran, Iran)) ; Rezaei, Sadegh (Amirkabir University of Technology (Teheran, Iran)) ; Nadarajah, Saralees (University of Manchester)
Motivated by three failure data sets (lifetime of patients, failure time of hard drives and failure timeof a product), we introduce three different three-parameter distributions, study basic mathematical properties, address estimation by the method of maximum likelihood and investigate finite sample performance of the estimators. [...]
2016
SORT : statistics and operations research transactions, Vol. 40 Núm. 1 (January-June 2016) , p. 177-200 (Articles)

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8 p, 83.4 KB

A note on "Double bounded Kumaraswamy-power series class of distributions" / Pogány, Tibor K. (University of Rijeka (Rijeka, Croàcia). Faculty of Maritime Studies) ; Nadarajah, Saralees (University of Manchester. School of Mathematics)
In a recent edition of SORT, Bidram and Nekoukhou proposed a novel class of distributions and derived its mathematical properties. Several of the mathematical properties are expressed as single infinite sums or double infinite sums. [...]
2015
SORT : statistics and operations research transactions, Vol. 39 Núm. 2 (July-December 2015) , p. 273-280 (Articles)

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28 p, 632.5 KB

The new class of Kummer beta generalized distributions / Pescim, R. R. (Universidade de Sao Paulo-USP. Departamento de Ciências Exatas) ; Cordeiro, G. M. (Universidade Federal de Pernambuco-UFPE. Departamento de Estatística) ; Demétrio, Clarice Garcia Borges (Universidade de Sao Paulo-USP. Departamento de Ciências Exatas) ; Ortega, Edwin M. M (Universidade de Sao Paulo-USP. Departamento de Ciências Exatas) ; Nadarajah, Saralees (University of Manchester. School of Mathematics)
Ng and Kotz (1995) introduced a distribution that provides greater flexibility to extremes. We define and study a new class of distributions called the Kummer beta generalized family to extend the normal, Weibull, gamma and Gumbel distributions, among several other well-known distributions. [...]
2012
SORT : statistics and operations research transactions, Vol. 36, Núm. 2 (juliol-desembre 2012) , p. 153-180

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18 p, 145.2 KB

Muliere and Scarsini's bivariate Pareto distribution: sums, products, and ratios / Nadarajah, Saralees (University of Nebraska) ; Kotz, Samuel (The George Washington University)
We derive the exact distributions of R = X + Y, P = X Y and W = X/(X + Y) and the corresponding moment properties when X and Y follow Muliere and Scarsini's bivariate Pareto distribution. The expressions turn out to involve special functions. [...]
Trobem la distribució exacta de R = X + Y , P = X Y, W = X/(X + Y ), els corresponents moments i les seves propietats quan X, Y segueixen la distribució bivariant Pareto de Muliere i Scarsini. Les expressions fan servir funcions especials. [...]
2005
SORT : statistics and operations research transactions, Vol. 29, Núm. 2 (July-December 2005) , p. 183-200

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14 p, 98.9 KB

Information matrices for some elliptically symmetric distributions / Nadarajah, Saralees (University of Nebraska) ; Kotz, Samuel (The George Washington University)
The Fisher information matrices are derived for three of the most popular elliptically symmetric distributions: the Pearson type II, Pearson type VII and the Kotz type distributions. We hope the results could be important to the many researchers working in this area.
2005
SORT : statistics and operations research transactions, Vol. 29, Núm. 1 (January-June 2005) , p. 43-56

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