4 papers
Absence of Replica Symmetry Breaking in the Random Field Mixed-Spin Ginzburg-Landau Model
Roberto Vila
In this paper, an extension of the random field Ginzburg-Landau model on the hypercubic lattice is considered by adding -spin () interactions coupled to general di…
Maximum Likelihood Estimation for Parameters of Weibull Distribution and Properties: Monte Carlo Simulation
Mehmet Niyazi Çankaya, Roberto Vila
The maximum likelihood estimation method is a generalization of the known maximum likelihood method to overcome the problem for modeling non-identical observation…
Log-symmetric regression models for correlated errors with an application to mortality data
Helton Saulo, Roberto Vila
Log-symmetric regression models are particularly useful when the response variable is continuous, strictly positive and asymmetric. In this paper, we proposed a class of log-symmet…
On a bivariate Birnbaum-Saunders distribution parameterized by its means: features, reliability analysis and application
Helton Saulo, Jeremias Leão, Roberto Vila +2
Birnbaum-Saunders models have been widely used to model positively skewed data. In this paper, we introduce a bivariate Birnbaum-Saunders distribution which has the means as parame…