نتایج جستجو برای: bayesian

تعداد نتایج: 81723  

Journal: :journal of optimization in industrial engineering 2010
marjan niyati amir masud eftekhari moghadam

estimating the final price of products is of great importance. for manufacturing companies proposing a final price is only possible after the design process over. these companies propose an approximate initial price of the required products to the customers for which some of time and money is required. here using the existing data of already designed transformers and utilizing the bayesian anal...

F Z. Labbaf, H Talebi,

The problem of obtaining the optimum design, which is able to discriminate between several rival models has been considered in this paper. We give an optimality-criterion, using a Bayesian approach. This is an extension of the Bayesian KL-optimality to more than two models. A modification is made to deal with nested models. The proposed Bayesian optimality criterion is a weighted average, where...

Journal: :journal of biostatistics and epidemiology 0
abbas rahimi-feroushani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran mohammad chehrazi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran and department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute, tehran, iran keramat nourijelyani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran reza omani-samani department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute, tehran, iran

b a c k g r o u n d & aim: the aim of the current study was to investigate the advantages of bayesian method in comparison to traditional methods to detect best antioxidant in freezing of human male gametes. methods  &  materials:   semen  samples  were  obtained  from  40  men  whose  sperm  had  normal criteria. a part of each sample was separated without antioxidant  as fresh and the remaini...

Hassan Assareh Kerrie L Mengersen Rassoul Noorossana

Precise identification of the time when a process has changed enables process engineers to search for a potential special cause more effectively. In this paper, we develop change point estimation methods for a Poisson process in a Bayesian framework. We apply Bayesian hierarchical models to formulate the change point where there exists a step < /div> change, a linear trend and a known multip...

ژورنال: اندیشه آماری 2017

‎In this study‎, ‎E-Bayesian of parameters of two parameter exponential distribution under squared error loss function is obtained‎. ‎The estimated and the efficiency of the proposed method has been compared with Bayesian estimator using Monte Carlo simulation‎. 

Journal: :journal of optimization in industrial engineering 0
marjan niyati department of computer engineering and information technology qazvin azad university of technology ,iran amir masud eftekhari moghadam department of computer engineering and information technology qazvin azad university of technology ,iran

estimating the final price of products is of great importance. for manufacturing companies proposing a final price is only possible after the design process over. these companies propose an approximate initial price of the required products to the customers for which some of time and money is required. here using the existing data of already designed transformers and utilizing the bayesian anal...

ژورنال: پژوهش های ریاضی 2021

Introduction      This paper is concerned with using the Maximum Likelihood, Bayes and a new method, E-Bayesian, estimations for computing estimates for the unknown parameter, reliability and hazard rate functions of the Generalized Inverted Exponential distribution. The estimates are derived based on a conjugate prior for the unknown parameter. E-Bayesian estimations are obtained based on th...

Journal: :international journal of pediatrics 0
hamid reza khalkhali associate professor in biostatistics, inpatient’s safety research center, department of biostatistics and epidemiology, urmia university of medical sciences, urmia, iran. shahsanam gheibi associate professor of pediatric gastroenterology, maternal and childhood obesity research center, urmia university of medical sciences, urmia, iran. rasool gharaaghaji associate professor in biostatistics, department of health and preventive medicine, urmia university of medical sciences, urmia, iran. alireza didarloo associate professor in health education and promotion, solid tumor research center, department of health and preventive medicine, urmia university of medical sciences, urmia, iran.

background often, there is no access to sufficient sample size to estimate the prevalence using the method of direct estimator in all areas. the aim of this study was to compare small area’s bayesian method and direct method in estimating the prevalence of steatosis in obese and overweight children. materials and methods: in this cross-sectional study, was conducted on 150 overweight and obese ...

Consider a Bayesian optimal design with many support points which poses the problem of collecting data with a few number of observations at each design point. Under such a scenario the asymptotic property of using Fisher information matrix for approximating the covariance matrix of posterior ML estimators might be doubtful. We suggest to use Bhattcharyya matrix in deriving the information matri...

ژورنال: اندیشه آماری 2014

In this article introduce the sequential order statistics. Therefore based on multiply Type-II censored sample of sequential order statistics, Bayesian estimators are derived for the parameters of one- and two- parameter exponential distributions under the assumption that the prior distribution is given by an inverse gamma distribution and the Bayes estimator with respect to squared error loss ...

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