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arXiv 1303.6199stat.ME
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直方图变量的分布与对称分布回归模型

Distribution and Symmetric Distribution Regression Model for Histogram-Valued Variables

Sónia Dias, Paula Brito

摘要:

直方图值变量是符号数据分析中研究的一种特殊类型的变量,其中每个分析对象对应一个分布,该分布可以由直方图或分位数函数表示。这类数据的线性回归模型必然比经典模型的简单推广更复杂:参数不能为负,变量之间的线性关系必须允许为正或逆。本文提出了一种新的直方图变量线性回归模型,即分布和对称分布回归模型。为了确定该模型的参数,有必要解决一个二次优化问题,受非负约束的未知数;预测和观察到的分布之间的误差测量使用马洛距离。与经典分析一样,该模型与拟合优度度量相关联,其值范围在0和1之间。使用所提出的模型,实际和模拟数据的应用。

英文摘要:

Histogram-valued variables are a particular kind of variables studied in Symbolic Data Analysis where to each entity under analysis corresponds a distribution that may be represented by a histogram or by a quantile function. Linear regression models for this type of data are necessarily more complex than a simple generalization of the classical model: the parameters cannot be negative still the linear relationship between the variables must be allowed to be either direct or inverse. In this work we propose a new linear regression model for histogram-valued variables that solves this problem, named Distribution and Symmetric Distribution Regression Model. To determine the parameters of this model it is necessary to solve a quadratic optimization problem, subject to non-negativity constraints on the unknowns; the error measure between the predicted and observed distributions uses the Mallows distance. As in classical analysis, the model is associated with a goodness-of-fit measure whose values range between 0 and 1. Using the proposed model, applications with real and simulated data are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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