A drawback and an improvement of the classical Weibull probability plot

A drawback and an improvement of the classical Weibull probability plot
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经典威布尔概率图的缺点与改进

DOI:
10.1016/j.ress.2014.02.001
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发表时间:
2014-06
影响因子:
8.1
通讯作者:
R. Jiang
R. Jiang
中科院分区:
工程技术1区
文献类型:
--
作者:
R. Jiang

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经典的威布尔概率纸 (WPP) 图已被广泛用于识别拟合给定数据集的模型。它基于模型的 WPP 图与形状数据之间的匹配。本文对创建 WPP 图的威布尔变换进行了分析,结果表明,由于威布尔变换的高度非线性,从分布模型随机生成的数据的 WPP 图的形状可能与模型的 WPP 图的形状显着不同。因此,根据 WPP 数据图的形状选择模型可能不可靠。提出基于cdf的加权最小二乘法来提高参数估计精度;并提出改进的WPP图以避免经典WPP图的缺点。通过模拟和实际例子说明了所提出的估计方法和概率图的适当性和有用性。
The classical Weibull Probability Paper (WPP) plot has been widely used to identify a model for fitting a given dataset. It is based on a match between the WPP plots of the model and data in shape. This paper carries out an analysis for the Weibull transformations that create the WPP plot and shows that the shape of the WPP plot of the data randomly generated from a distribution model can be significantly different from the shape of the WPP plot of the model due to the high non-linearity of the Weibull transformations. As such, choosing model based on the shape of the WPP plot of data can be unreliable. A cdf-based weighted least squares method is proposed to improve the parameter estimation accuracy; and an improved WPP plot is suggested to avoid the drawback of the classical WPP plot. The appropriateness and usefulness of the proposed estimation method and probability plot are illustrated by simulation and real-world examples.
DOI: 10.1007/s11749-008-0133-7
发表时间: 2010
期刊: TEST
影响因子: 1.3
作者:
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