Categoría: ARTÍCULOS

This insert introduces some kernel estimators that provide nonparametric density estimates along with ado-files to calculate them. Kernel density estimators are an essential component of many more complicated estimators as tools for the exploratory stage of data analysis. In this Read More …

In previous reports we presented a series of programs to calculate density estimates for univariate data (Salgado-Ugarte et al. 1993; 1995a). We also introduced a series of practical bandwidth rules for histograms, frequency polygons, and kernel density estimators, including cross-validation Read More …

Variable bandwidth kernel density estimators increase the window width at low densities and decrease it where data concentrate. This represents an improvement over the fixed bandwidth kernel density estimators. In this article, we explore the use of one implementation of Read More …