Results 11 to 20 of about 73,998 (302)
Group averaging and the Gini deviation
RUDN Journal of Economics, 2021 It is known that partitioning a society into groups with subsequent averaging in each group decreases the Gini coefficient. The resulting Lorenz function is piecewise linear.
Oleg I. Pavlov, Olga Yu. Pavlova
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Asymptotic Results in Broken Stick Models: The Approach via Lorenz Curves
Mathematics, 2020 A stick of length 1 is broken at random into n smaller sticks. How much inequality does this procedure produce? What happens if, instead of breaking a stick, we break a square? What happens asymptotically?
Gheorghiță Zbăganu
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Lorenz-generated bivariate Archimedean copulas
Dependence Modeling, 2020 A novel generating mechanism for non-strict bivariate Archimedean copulas via the Lorenz curve of a non-negative random variable is proposed. Lorenz curves have been extensively studied in economics and statistics to characterize wealth inequality and ...
Fontanari Andrea +2 more
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Lognormal Lorenz and normal receiver operating characteristic curves as mirror images [PDF]
Royal Society Open Science, 2015 The Lorenz curve for assessing economic inequality depicts the relation between two cumulative distribution functions (CDFs), one for the distribution of incomes or wealth and the other for their first-moment distribution.
R. John Irwin, Michael J. Hautus
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Recalculation of error growth models' parameters for the ECMWF forecast system [PDF]
Geoscientific Model Development, 2021 This article provides a new estimate of error growth models' parameters approximating predictability curves and their differentials, calculated from data of the ECMWF forecast system over the 1986 to 2011 period.
H. Bednář, A. Raidl, J. Mikšovský
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Resource and Energy Economics, 2010 The purpose of this paper is twofold. First, it exhibits that standard tools in themeasurement of income inequality, such as the Lorenz curve and the Gini-index,can successfully be applied to the issues of inequality measurement of carbonemissions and the equity of abatement policies across countries.
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A simple method for estimating the Lorenz curve
Humanities & Social Sciences Communications, 2021 Given many popular functional forms for the Lorenz curve do not have a closed-form expression for the Gini index and no study has utilized the observed Gini index to estimate parameter(s) associated with the corresponding parametric functional form, a ...
Thitithep Sitthiyot, Kanyarat Holasut
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Mathematics, 2020 The purpose of this paper is to derive analytic expressions for the multivariate Lorenz surface for a relevant type of models based on the class of distributions with given marginals described by Sarmanov and Lee.
José María Sarabia, Vanesa Jorda
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A Novel Lifetime Model With A Bathtub-Shaped Hazard Rate: Properties & Applications
Journal of Applied Science and Engineering, 2022 A novel three-parameter lifetime model called the Marshall Olkin power Ailamujia (MOPA) distribution is developed. The statistical qualities and reliability characteristics of the proposed model are examined, including moment, generating function ...
Abdullah H. Al-nefaie, Ibrahim E. Ragab
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The Lamé class of Lorenz curves [PDF]
Communications in Statistics - Theory and Methods, 2017 The authors thank to Ministerio de Econom a y Competitividad, project ECO2010-15455, for partial support. The second author thanks to the Ministerio de Educaci on (FPU AP-2010-4907) for partial support. We are grateful for the constructive suggestions provided by the reviewers, which improved the paper.
Sarabia Alegría, José María +2 more
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