Mehdi Jabbari Nooghabi - Department of Statistics, Ferdowsi University of Mashhad, Mashhad, Iran.
Ali Soori - Department of Mathematics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Parviz Nasiri - Department of Statistics, University of Payam Noor, ۱۹۳۹۵-۴۶۹۷ Tehran, Iran.
Farshin Hormozinejad - Department of Mathematics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Mohammadreza Ghalani - Department of Mathematics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

In any Bayesian inference problem, the posterior distribution is a product of the likelihood and the prior: thus, it is a ected by both in cases where one possesses little or no information about the target parameters in advance. In the case of an objective Bayesian analysis, the resulting posterior should be expected to be universally agreed upon by ev- eryone, whereas . subjective Bayesianism would argue that probability corresponds to the degree of personal belief. In this paper, we consider Bayesian estimation of two-parameter exponential distribution using the Bayes approach needs a prior distribution for parame- ters. However, it is dicult to use the joint prior distributions. Sometimes, by using linear transformation of reliability function of two-parameter exponential distribution in order to get simple linear regression model to estimation of parameters. Here, we propose to make Bayesian inferences for the parameters using non-informative priors, namely the (depen- dent and independent) Je reys' prior and the reference prior. The Bayesian estimation was assessed using the Monte Carlo method. The criteria mean square error was determined evaluate the possible impact of prior speci cation on estimation. Finally, an application on a real dataset illustrated the developed procedures.

Jeffreys' prior, two-parameters exponential distribution, objective Bayesian analysis, posterior distribution, MSE