使用非对称损失函数的i型混合xgamma分布的贝叶斯估计

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
A. Yadav
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引用次数: 0

摘要

本文提出了存在i型混合截尾观测值时xgamma分布参数和可靠性函数的贝叶斯估计。利用一般熵损失函数,通过假设信息先验和非信息先验,得到了参数的贝叶斯估计。显然,审查增加了估计过程中的困难;因此,在上述条件下,使用i型混合删减观测计算的贝叶斯估计量通常不具有任何标准形式。因此,使用Tierney-Kadane近似和Markov链蒙特卡罗数值技术计算贝叶斯估计。进一步讨论了不同的区间估计,即渐近置信区间、自举置信区间和最高后验密度区间随区间宽度和覆盖概率的变化。用非线性最大化迭代法计算了最大似然估计,并用蒙特卡罗模拟与相应的贝叶斯估计进行了比较。从整个样本空间的平均损失和相应的区间长度两方面对两种估计量进行了比较。最后,一个医疗数据集已被考虑为实际应用所提出的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bayesian estimation for the type-I hybrid xgamma distribution using asymmetric loss function
This article proposes the Bayes estimation of the parameter and reliability function for xgamma distribution in the presence of type-I hybrid censored observations. The Bayes estimate of the parameter has been obtained by assuming informative and non-informative priors using general entropy loss function. Obviously, censoring adds difficulties in estimation procedure; hence the Bayes estimators computed with type-I hybrid censored observation under the mentioned prior often do not assume any standard form. Therefore, Bayes estimates are computed using Tierney-Kadane approximation and Markov Chain Monte Carlo numerical technique. Further, different interval estimates namely asymptotic confidence interval, bootstrap confidence interval and highest posterior density interval along with the width of the interval and coverage probability are also discussed. The maximum likelihood estimate for the same has also been computed using non- linear maximization iterative procedure and compared with corresponding Bayes estimates using Monte Carlo simulations. The comparison of the estimators are made in terms of average loss over whole sample space and corresponding length of the interval. lastly, one medical data set has been considered for the real application of the proposed study.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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