Estimation of Lorenz curves: a Bayesian nonparametric approach

In this article, we estimate Lorenz curves using the recent development of the Bayesian non-parametric method with Dirichlet process prior. We also consider contaminated observations of income and propose a method for removing these contaminated observations. Further, we present examples using both simulated data and real data to illustrate our approach. (C) 2003 Elsevier Science B.V. All rights reserved.