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Mehran Naghizadeh Qomi

Mehran Naghizadeh Qomi

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
HIndex: 0/00
Faculty: Faculty of Mathematical Sciences
Address: Department of Statistics - University of Mazandaran - Babolsar- Iran
Phone: 01135302473

Research

Title
Shrinkage Testimation in Exponential Distribution based on Records under Asymmetric Squared Log Error Loss
Type
JournalPaper
Keywords
Digamma function; exponential distribution; records; shrinkage testimators.
Year
2015
Journal journal of statistical research of iran
DOI
Researchers Mehran Naghizadeh Qomi ، leila barmoodeh

Abstract

In the present paper, we study shrinkage testimation for the unknown scale parameter $\theta>0$ of the exponential distribution based on record data under the asymmetric squared log error loss function. A minimum risk unbiased estimator within the class of the estimators of the form $cT_m$ is derived, where $T_m$ is the maximum likelihood estimate of $\theta$. Some shrinkage testimators are proposed and their risks are computed. The relative efficiencies of the shrinkage testimators with respect to a minimum risk unbiased estimator of the form $cT_m$ under the squared log error loss function are calculated for the comparison purposes. An illustrative example is also presented.