指数型财务报表损失分布的精算计量、回归及应用

A. Abubakari
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引用次数: 0

摘要

本研究提出并研究了一种新的损失分布,即指数型fr损失分布。分布的密度函数图表明,分布可以呈现不同的形状,包括右偏形和递减形,以及不同的峰度。得到了该分布的矩、均值超额函数、有限期望值函数、风险值、风险尾值和尾部方差等性质。通过极大似然、极大积间距、普通最小二乘法和加权最小二乘法得到了分布参数的估计量。利用仿真研究对各种估计器的性能进行了研究。结果表明,估计量是一致的。将新的分布扩展为一个回归模型。用精算数据集验证了新分布及其回归模型的有效性和适用性。结果表明,新的损失分布可以作为精算数据建模的替代方法。
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Actuarial Measures, Regression, and Applications of Exponentiated Fréchet Loss Distribution
In this study, a new loss distribution, called the exponentiated Fréchet loss distribution is developed and studied. The plots of the density function of the distribution show that the distribution can exhibit different shapes including right skewed and decreasing shapes, and various degrees of kurtosis. Several properties of the distribution are obtained including moments, mean excess function, limited expected value function, value at risk, tail value at risk, and tail variance. The estimators of the parameters of the distribution are obtained via maximum likelihood, maximum product spacing, ordinary least squares, and weighted least squares methods. The performances of the various estimators are investigated using simulation studies. The results show that the estimators are consistent. The new distribution is extended into a regression model. The usefulness and applicability of the new distribution and its regression model are demonstrated using actuarial data sets. The results show that the new loss distribution can be used as an alternative to modelling actuarial data.
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