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Comparing Cross-Country Estimates of Lorenz Curves Using a Dirichlet Distribution Across Estimators and Datasets

Andrew C. Chang, Phillip Li () and Shawn M. Martin

No 2017-062, Finance and Economics Discussion Series from Board of Governors of the Federal Reserve System (US)

Abstract: Chotikapanich and Griffiths (2002) introduced the Dirichlet distribution to the estimation of Lorenz curves. This distribution naturally accommodates the proportional nature of income share data and the dependence structure between the shares. Chotikapanich and Griffiths (2002) fit a family of five Lorenz curves to one year of Swedish and Brazilian income share data using unconstrained maximum likelihood and unconstrained non-linear least squares. We attempt to replicate the authors' results and extend their analyses using both constrained estimation techniques and five additional years of data. We successfully replicate a majority of the authors' results and find that some of their main qualitative conclusions also hold using our constrained estimators and additional data.

Keywords: Constrained Estimation; Dirichlet; Dirichlet Distribution; Gini Coefficient; Income Distribution; Lorenz Curve; Maximum Likelihood; Non-linear Least Squares; Replication; Share Data (search for similar items in EconPapers)
JEL-codes: C24 C51 C87 D31 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ecm
Date: 2017-06
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Related works:
Journal Article: Comparing cross‐country estimates of Lorenz curves using a Dirichlet distribution across estimators and datasets (2018) Downloads
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DOI: 10.17016/FEDS.2017.062

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