In this paper we provide an overview of some trend models formulated for global and local estimation. Global trend models are based on the assumption that the trend or nonstationary mean of a time series can be approximated closely by simple functions of time over the entire span of the series....

Se presentan y analizan los índices de desigualdad de Gini, de Atkinson y de la entropía generalizada. Para este último se estudian los casos particulares de Theil y de Bourguignon. Se discuten los méritos de cada uno de dichos índices desde el punto de vista del cumplimiento de propiedades...

The purpose of this research is to introduce a new approach to the decomposition of the Gini ratio into three components, supporting them with economic and statistical rigorous interpretations. The three components are: (i) the Gini inequality within subpopulations; (ii) the net contribution of...