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逆Lomax分布的图像特征
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作者 刘蕾 顾蓓青 徐晓岭 《电子产品可靠性与环境试验》 2023年第4期55-58,共4页
相比Lomax分布,逆Lomax分布可以模拟失效率为非单调形状的数据。针对逆Lomax分布,详细推导证明了其密度函数、失效率函数和平均失效率函数的形状特征,并给出了相应的图像。发现当0<α≤1时,其密度函数、失效率函数和平均失效率函数... 相比Lomax分布,逆Lomax分布可以模拟失效率为非单调形状的数据。针对逆Lomax分布,详细推导证明了其密度函数、失效率函数和平均失效率函数的形状特征,并给出了相应的图像。发现当0<α≤1时,其密度函数、失效率函数和平均失效率函数均为严格单调递减;而当α>0时,均为“倒浴盆”形。同时,也说明了逆Lomax分布的k阶矩不存在。 展开更多
关键词 lomax分布 失效率函数 平均失效率函数 k阶矩
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Flexible Reduced Logarithmic-Inverse Lomax Distribution with Application for Bladder Cancer
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作者 Mohamed M. Buzaridah Dina A. Ramadan Beih S. El-Desouky 《Open Journal of Modelling and Simulation》 2021年第4期351-369,共19页
<span style="font-family:Verdana;">In this paper, a new method for adding parameters to a well-established distribution to obtain more flexible new families of distributions is applied to the inverse L... <span style="font-family:Verdana;">In this paper, a new method for adding parameters to a well-established distribution to obtain more flexible new families of distributions is applied to the inverse Lomax distribution (IFD). This method is known by the flexible reduced logarithmic-X family of distribution (FRL-X). The proposed distribution can be called a flexible reduced logarithmic-inverse Lomax distribution (FRL-IL). The statistical and reliability properties of the proposed models are studied including moments, order statistics, moment generating function, and quantile function. The estimation of the model parameters by maximum likelihood and the observed information matrix are also discussed. In order to assess the potential of the newly created distribution. The extended model is applied to real data and the results are given and compared to other models.</span> 展开更多
关键词 lomax distribution inverse lomax distribution Hazard Rate Function Maximum Likelihood Estimators Skewness and Kurtosis Moment Generating Function
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