×

On the admissibility of \(c\bar X+d\) with respect to the LINEX loss function. (English) Zbl 0651.62007

Summary: Let \(X_ 1,...,X_ n\) be a random sample from a normal distribution with mean \(\theta\) and variance \(\sigma^ 2\). The problem is to etimate \(\theta\) with the loss function \[ L(\theta,e)=v(e-\theta)\quad where\quad v(x)=b(\exp (ax)-ax-1) \] and where a, b are constants with \(b>0\), \(a\neq 0\). A. Zellner [J. Am. Stat. Assoc. 81, 446-451 (1986; Zbl 0603.62037)], showed that \(\bar X-\sigma 2a/2n\) dominates \(\bar X\) and hence \(\bar X\) is inadmissible. The question of what values of c and d render \(c\bar X+d\) admissible is studied here.

MSC:

62C15 Admissibility in statistical decision theory
62F15 Bayesian inference
62F10 Point estimation

Citations:

Zbl 0603.62037
Full Text: DOI

References:

[1] Lehmann E.L., Theory of Point Estimation (1983) · Zbl 0522.62020
[2] DOI: 10.2307/2289234 · Zbl 0603.62037 · doi:10.2307/2289234
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.