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删失下的指数分布的贝叶斯估计(英文) 被引量:2

Bayes Estimator for the Exponential Distribution under Censorship
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摘要 本文分别在Ⅱ型删失和随机删失下,表明了共轭先验下的指数分布的刻度参数的贝叶斯估计为具有如下形式的收缩估计(?)_(BE)=a■+bEθ,此处■为依赖样本θ的一个无偏估计且Eθ表示先验分布的期望。当采用平方损失函数时,a+b=1;如果用加权平方损失函数,则a+b<1。 Under the type Ⅱ censorship and random censorship, respectively, we show in this paper that the Bayes estimator of the exponential scale parameter with conjugate prior can be shrinkage estimation with the form θ^BE = αθ^ +b bEθ, where θ^ is an unbiased estimator depending on samples and Eθ denotes the expectation of the prior distribution. When the squared loss function is adopted, α + b = 1; if we use the weighted square loss filnction, then α+b〈 1.
作者 王立春
出处 《工程数学学报》 CSCD 北大核心 2006年第3期553-558,共6页 Chinese Journal of Engineering Mathematics
基金 The National Natural Science Foundation of China(10271001)
关键词 贝叶斯估计 收缩估计 损失函数 共轭先验 Bayes estimation shrinkage estimation loss function conjugate prior
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参考文献3

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同被引文献16

  • 1薛留根,廖靖宇.删失数据下一类回归模型的参数估计(英文)[J].工程数学学报,2005,22(4):712-718. 被引量:2
  • 2刘建平,陈光慧.通过对辅助变量的线性转化来改进比率估计[J].统计研究,2006,23(7):69-71. 被引量:2
  • 3石坚.高维线性模型中的经验似然[J].系统科学与数学,2007,27(1):124-133. 被引量:3
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  • 7Wang Q H, Rao J N K. Empirical likelihood for linear regression models under imputation for missing response[J]. The Canadian Journal Statistics, 2001, 29:597-608.
  • 8Qin Y, et al. Confidence intervals for marginal parameters under fractional linear regression imputation for missing data[J]. Journal of Multivariate Analysis, 2008, 99:1232-1259.
  • 9Kim J K, Fuller W. Fractional hot deck imputation[J]. Biometrika, 2004, 91:559-578.
  • 10Chen J, Rao J N K. Asymptotic normality under two-phase sampling designs[J]. Ststistica Sinica, 2007", 17:1047-1064.

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