1 citations · 1 across the 11 of their papers we have counts for
11 papers
Income inequality estimation with gamma mixtures
Roberto Vila, Helton Saulo, Felipe Quintino
This paper studies the estimation of the th Gini index under finite mixtures of gamma distributions. We derive closed-form expressions for the th Gini index and for the expec…
Unbiased estimation of normalized scale-invariant indices under the gamma distribution
Roberto Vila, Helton Saulo, Felipe Quintino
We introduce a broad class of normalized scale-invariant indices (NPRIs) generated by homogeneous functions and encompassing several well-known measures, including the Gini coeffic…
Unifying the Hoover and Gini indices: Analytical, bias, and computational aspects
Roberto Vila, Helton Saulo, Felipe Quintino
We propose a new family of inequality indices that bridges the Hoover index and the Gini coefficient. The measure is defined as the normalized expected absolute value of a convex c…
Modeling double bounded data based on correlated gamma random variables
Roberto Vila, Felipe Quintino, Marcelo Bourguignon
Many types of bounded data defined on the unit interval arise naturally as ratios of the form . In the existing literature, the main statistical models proposed for this…
A general class of continuous asymmetric distributions with positive support
Felipe S. Quintino, Pushpa N. Rathie, Luan C. S. M. Ozelim +2
In order to better fit real-world datasets, studying asymmetric distribution is of great interest. In this work, we derive several mathematical properties of a general class of asy…
A transformed-score approach to closed-form and one-step efficient estimation for the beta distribution
Roberto Vila, Helton Saulo, Felipe Quintino +1
Power transformations of beta random variables produce unbiased estimating equations from transformed-model likelihood scores. This construction clarifies the connection between mo…