Additive models of the type y=f_1(x_1)+...+f_p(x_p)+e where f_j,j=1,...,p, have unspecified functional form, are flexible statistical regression models which can be used to characterize nonlinear regression effects. The basic tools used for fitting the additive model are the expansion in...

In additive models the problem of variable selection is strongly linked to the choice of the amount of smoothing used for components that represent metrical variables. Many software packages use separate toolsto solve the different tasks of variable selection and smoothing parameter choice. The...

In this paper, a robustness of Vector Auto-Regressive (VAR) models parameter will be estimated by using genetic algorithm (GA) on outliers detection. Least Square (LS) estimator has been adopted in GA term to estimate a robust parameters of the VAR models were represented by chromosomes in GA's...