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一种非对称损失下分布函数的最优不变估计 被引量:1

Estimation of Distribution Function Under an Unsymmetrical Loss Fuction
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摘要 给定来自一未知连续分布函数F的容量为n的子样x1,x2,…,xn,考虑分布函数F的不变估计问题.在非对称损失函数L(F(t),d(t))=b∫(exp{a[d(t)-F(t)]}-a[d(t)-F(t)]-1)dF(t)和单调变换群下得到F的最优不变估计为d(t,X)=∑ni=0ciI(x(i)≤t≤x(i+1)),其中ci=1/aln(∫01ti(1-t)n-idt)/(∫01exp{-at}ti(1-t)n-idt),a≠0,b>0. Given a random sample ofx1,x2,…,xnsize n from an unknown continuous distributionfunction F, this paper considers the problem of invariant estimator of the continuous distributionfunction F. Under the unsymmetrical loss function Z,(F(t),d(t))=b∫(exp{a[d(t)-F(t)]}-a[d(t)-F(t)]-1)dF(t), we get the best invariant estimator of the continuous distribution function F.
作者 余慧敏
出处 《广西科学》 CAS 2007年第4期365-366,共2页 Guangxi Sciences
关键词 非对称损失 连续分布函数 不变估计 unsymmetrical loss,continuous distribution function,invariant estimator
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参考文献9

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