Gayan Warahena-Liyanage, B. Oluyede, Thatayaone Moakofi, Whatmore Sengweni
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引用次数: 0
摘要
在本研究中,我们引入了一种新的广义分布族,称为指数半Logistic-Harris-G (EHL-Harris-G)分布,它扩展了Harris-G分布。引入这种广义分布族的动机在于它能够克服以前分布族的局限性,增强灵活性,改善尾部行为,提供更好的统计特性,并在多个领域找到应用。讨论了几种统计性质,包括危险率函数、分位数函数、矩、剩余寿命矩、序统计量分布和rsamnyi熵。推导并研究了风险值、风险尾值、尾部方差和尾部方差溢价等风险度量。为了估计EHL-Harris-G族分布的参数,使用了以下六种不同的估计方法:最大似然(MLE)、最小二乘(LS)、加权最小二乘(WLS)、最大产品间距(MPS)、cram von Mises (CVM)和Anderson-Darling (AD)。EHL-Harris-Weibull (EHL-Harris-W)的蒙特卡罗模拟结果表明,MLE方法可以让我们获得更好的估计,其次是WLS,然后是AD。最后,通过将EHL-Harris-W分布拟合到来自不同学科的两个真实数据集,我们表明EHL-Harris-W分布优于文献中其他一些等参数非嵌套模型。
The New Exponentiated Half Logistic-Harris-G Family of Distributions with Actuarial Measures and Applications
In this study, we introduce a new generalized family of distributions called the Exponentiated Half Logistic-Harris-G (EHL-Harris-G) distribution, which extends the Harris-G distribution. The motivation for introducing this generalized family of distributions lies in its ability to overcome the limitations of previous families, enhance flexibility, improve tail behavior, provide better statistical properties and find applications in several fields. Several statistical properties, including hazard rate function, quantile function, moments, moments of residual life, distribution of the order statistics and Rényi entropy are discussed. Risk measures, such as value at risk, tail value at risk, tail variance and tail variance premium, are also derived and studied. To estimate the parameters of the EHL-Harris-G family of distributions, the following six different estimation approaches are used: maximum likelihood (MLE), least-squares (LS), weighted least-squares (WLS), maximum product spacing (MPS), Cramér–von Mises (CVM), and Anderson–Darling (AD). The Monte Carlo simulation results for EHL-Harris-Weibull (EHL-Harris-W) show that the MLE method allows us to obtain better estimates, followed by WLS and then AD. Finally, we show that the EHL-Harris-W distribution is superior to some other equi-parameter non-nested models in the literature, by fitting it to two real-life data sets from different disciplines.