We introduce the ε-Gini-contamination multiple priors model in which the set of priors are those probability measures that are ‘close’ to a central P with respect to the relative Gini concentration index. We show that such preferences can be represented by a linear-mean-standard-deviation utility function on a restricted domain. © 2006 Elsevier B.V. All rights reserved.

Confidentiality, political sensitivity and other considerations often dictate the reporting of income inequality data by governments and other agencies in grouped format. In these cases, inequality measures, such as the Gini index, must be estimated from the grouped data rather than from the individual observations from which the grouped data are constructed. Also, grouped data, which are gener...

introduction: the mortality rate of children is one of the most important indicators to measuring the development of countries. equitable access to pediatricians is an important factor in reducing child mortality and promoting society health. the aim of this tudy was to investiget the inequality and trend of geographic accessibility to pediatricians in iran in the period 2007 to 2013. materials...

Punctuated Equilibrium (PE) states that after long periods of evolutionary quiescence, species evolution can take place in short time intervals, where sudden differentiation makes new species emerge and some species extinct. In this paper, we introduce and study the effect of punctuated equilibrium on two different asset exchangemodels: the yard sale model (YS, winner gets a random fraction of ...

BACKGROUND Health workforce distribution is so important in access posture, coverage and equity. Following millennium development goals (MDGs), special attention to health workforces in relation with maternal and child health is required. OBJECTIVE The aim of the current study was to determine distribution of maternal and child health related workforces in Iran during 2010-2012, using inequal...

This paper considers the problem of constructing a normatively significant multidimensional Gini index of relative inequality. The social evaluation relation (SER) from which the index is derived is required to satisfy a weak version of the Pigou-Dalton Bundle Principle (WPDBP) (rather than Uniform Majorization or similar conditions). It is also desired to satisfy a weak form of the condition o...

Despite growing interest in data stream mining the most successful incremental learners still use periodic recomputation to update attribute information gains and Gini indices. This note provides simple incremental formulas and algorithms for computing entropy and Gini index from time-changing data streams.