In the present article, the modified Weibull distribution proposed by Sarhan and Zaindin [5] is considered and proposed parameter estimation procedure based on the Monte Carlo Expectation Maximization algorithm to obtain the estimates of unknown parameters. To see the performance of the proposed estimat...
The mixture Weibull distribution is widely used in the reliability analysis of lifetime data of components, especially for those caused by multiple failure
Due to the flexibility of the Weibull distribution and the proportional hazard (PH) model, Weibull PH is widely used in survival analysis under right censored data and interval censored data but it is seldom investigated under current status data, partially because there is less information in ...
In this paper, the quasi-moment estimators of the parameters are proposed based on the zero-failure data in Weibull distribution according to the concept "mean residual lifetime". 本文对Weibull分布场合下的无失效数据(ti,ni),根据“平均剩余寿命”这一概念得到了参数的拟矩估计,进而将其转化至有一个...
摘要: Many Aspects of Anticipation 关键词: Bernoulli pmf binomial distribution expectation geometric distribution independent random variables log-logistic distribution moments Poisson pmf transform methods Weibull distribution 出版时间: 2016/08/26 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 ...
Weibulldistribution, asymptoticvariances,Akaike’sinformationcriterion,Bayesianinformationcriterion 1Introduction Modelsforsurvivaldatawithasurvivingfractionareknownascureratemodelsorlong-term survivalmodels,andtheyplayavitalroleinreliabilityandsurvivalanalysis.Duetothe developmentofnewdrugsandtreatmentregimens,incohortsof...
By taking the maximum of the Q function as the optimization goal and the rough limits of each parameter as the constraints, a parameter estimation model of the mixture Weibull distribution is built. The PSO algorithm has been introduced into the maximization step of the EM a...
In this article, we consider a lifetime distribution, the Weibull-Logarithmic distribution introduced by [6]. We investigate some new statistical characterizations and properties.We develop the maximum likelihood inference using EM algorithm. Asymptotic properties of the MLEs are obtained and extensive ...
Statistical models are good alternatives to achieve accurate forecasts, but they require assumptions on the statistical distribution of EWS in parametric frameworks. This paper proposes an Inverse Burr - Inverse Weibull finite mixture distribution for EWS characterization and its Expectation-Maximization (EM...
Instead of estimating win percentage as in baseball, the extended Pythagorean estimates points won per game. A least-squares algorithm is used to fit offensive and defensive goal distributions to a three-parameter Weibull distribution, of which the parameter of interest is the Pythagorean exponent. ...