5 citations · 10 across the 15 of their papers we have counts for
15 papers · 1 filter
Moment-type estimators for a weighted exponential family
Roberto Vila, Helton Saulo
In this paper, we propose and study closed-form moment type estimators for a weighted exponential family. We also develop a bias-reduced version of these proposed closed-form estim…
Family of multivariate extended skew-elliptical distributions: Statistical properties, inference and application
Roberto Vila, Helton Saulo, Leonardo Santos +2
In this paper we propose a family of multivariate asymmetric distributions over an arbitrary subset of set of real numbers which is defined in terms of the well-known elliptically…
Bivariate log-symmetric models: distributional properties, parameter estimation and an application to fatigue data analysis
Roberto Vila, Narayanaswamy Balakrishnan, Helton Saulo +1
The bivariate Gaussian distribution has been a key model for many developments in statistics. However, many real-world phenomena generate data that follow asymmetric distributions,…
Unit-log-symmetric models: Characterization, statistical properties and its use in analyzing internet access data
Roberto Vila, Narayanaswamy Balakrishnan, Helton Saulo +1
We present here a unit-log-symmetric model based on the bivariate log-symmetric distribution. It is a flexible family of distributions over the interval . We then discuss i…
An extended Rayleigh model: Properties, regression and COVID-19 application
Gauss M. Cordeiro, Gabriela M. Rodrigues, Edwin M. M. Ortega +2
We define a four-parameter extended Rayleigh distribution, and obtain several mathematical properties including a stochastic representation. We construct a regression from the new…
A General Class of Trimodal Distributions: Properties and Inference
Roberto Vila, Victor Serra, Mehmet N. Çankaya +1
The modality is important topic for modelling. Using parametric models is an efficient way when real data set shows trimodality. In this paper we propose a new class of trimodal pr…