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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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Risks, 2021 A new methodology to derive IFRS 9 PiT PDs is proposed. The methodology first derives a PiT term structure with accompanying segmented term structures. Secondly, the calibration of credit scores using the Lorenz curve approach is used to create account ...
Douw Gerbrand Breed +4 more
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Asymptotic Behaviors of the Lorenz Curve for Left Truncated and Dependent Data [PDF]
Journal of Sciences, Islamic Republic of Iran, 2012 The purpose of this paper is to provide some asymptotic results for nonparametric estimator of the Lorenz curve and Lorenz process for the case in which data are assumed to be strong mixing subject to random left truncation.
M. Bolbolian Ghalibaf
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Application of Lorenz-curve model to stratified water injection evaluation
Petroleum Exploration and Development, 2015 To evaluate the effect of stratified water injection accurately during different development stages, a Lorenz-curve model was constructed upon a modified four-parameter Sarabia-Lorenz-curve model with water injectivity test data over years, and the ...
Dapeng GAO +7 more
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The Total time on test transform in measuring income inequality [PDF]
مدلسازی اقتصادسنجی, 2020 Wealth distribution is one of the most important and effective factors in the economic and social stability of each society. Thus, assessing the behavior of income distribution have great importance and to do this, several indices have been introduced ...
Mojtaba Esfahani +2 more
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An Exponential Family of Lorenz Curves [PDF]
Southern Economic Journal, 2001 A new method for building parametric‐functional families of Lorenz curves, generated from an initial Lorenz curve (which satisfies some regularity conditions), is presented. The method is applied to the exponential family since they use the exponential Lorenz curves as their generating curves.
Sarabia Alegría, José María +2 more
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Income inequality in Mashhad Bus Lines based on [PDF]
مدلسازی اقتصادسنجی, 2014 Several indexes and measures have been introduced in the field of economic inequality. Zenga in 2007 introduce a new index which as an alternative to the Gini coefficient.
Seyed Jamal Khorashadizade +2 more
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Estimating Lorenz and Concentration Curves [PDF]
The Stata Journal: Promoting communications on statistics and Stata, 2016 Lorenz and concentration curves are widely used tools in inequality research. In this article, I present a new command, lorenz, that estimates Lorenz and concentration curves from individual-level data and, optionally, displays the results in a graph.
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A regression method for estimating Gini index by decile
Humanities & Social Sciences CommunicationsBased on the three-parametric Lorenz curve proposed by Kakwani (1980), this paper builds a multiple linear regression model to estimate the parameters by the weighted least square method named the regression method. Using the Lorenz curve, the Gini index
Xiaobo Shen, Pingsheng Dai
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BMC Research Notes, 2018 Objective To conduct a proof-of-concept study comparing Lorenz-curve analysis (LCA) with power-law (exponential function) analysis (PLA), by applying segmented regression modeling to 1-year prescription claims data for three medications—alprazolam ...
Kathleen A. Fairman +4 more
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