From the 1 of 26 linked papers with an AI index.
1 citations · 1 across the 10 of their papers we have counts for
26 papers
Characterizations of independence between order statistics and rank indicators
Roberto Vila, Frederico Almeida
We study the independence between an order statistic and its corresponding rank indicator for independent nonnegative random variables. A general characterization is established th…
Conditional copula representations and extremal bounds for multivariate statistical functionals
Roberto Vila, Cira E G Otiniano, Carolyne Brito +1
The paper introduces a conditional copula representation that separates marginal distributions from dependence structures for multivariate expectations, and derives extremal bounds…
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…
Closed-form estimators for an exponential family derived from likelihood equations
Roberto Vila, Eduardo Nakano, Helton Saulo
In this paper, we derive closed-form estimators for the parameters of some probability distributions belonging to the exponential family. A bootstrap bias-reduced version of these…
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…