For the learning of Classification Tree, many researchers have used different splitting criteria, in which most commonly impurity-based criteria are: Gini index, Entropy function and Exponent-based index. By comparing Misclassification rates, none of the splitting criterion can be declared as providing best results in every situation. In this study, a new Mean Deviation based index has been pro...

We model the distribution of normalized interpoint distances (IDs) on the minimal spanning tree (MST) using multivariate beta vectors. We define overlapping sums of the components of a Dirichlet distribution to construct multivariate beta distributions. We also use a multivariate normal copula with beta marginals to define beta vectors. Based on the ordered IDs of the MST, we define a multivari...

We propose simple modifications for the Kakwani tax progressivity measure that make it suitable for evaluating access inequality for medical services. Our modification is to measure inequality using the ratio of the concentration index to the Gini coefficient instead of the difference between them. We also propose a measure using the Gini coefficient or concentration index of consumption expend...

This paper discusses the comparison between two kinds of features in clustering of some literary poems by the same author, the Romanian poet, Mihai Eminescu. Using Precision, Recall, Rand Index, Relative Precision and Purity measures we conclude that the topics of poems are better characterized by the phonemes as features than by geometric properties (described by six indicators: V/N ;A; Λ;V ar...

BACKGROUND One of the important aspects of equity in health is equality in the distribution of resources in this sector. The present study aimed to assess the distribution of hospital beds in Shiraz in 2014. METHODS In this retrospective cross-sectional study, the population density index and fair distribution of beds were analyzed by Lorenz curve and Gini coefficient, respectively. Descripti...

The extended Gini is a family of measures of variability which is mainly used in the areas of finance and income distribution. Each index in the family is defined by specifying one parameter. The higher the parameter, the more weight is attached to the lower portion of the cumulative distribution. In this paper we list and investigate the properties of the equivalents of the correlation coeffic...

This paper extends the heterogeneous agent overlapping generations model with bequests in Nishiyama (2000) by adding two-way intergenerational altruism and inter vivos transfers. Calibrating the model to the U.S. economy, the paper measures time preference and intergenerational altruism consistent with the economy¶s capital-output ratio and the sizes of intergenerational transfers. In the model...