2026/5/1
Hossein Bevrani

Hossein Bevrani

Academic rank: Professor
ORCID: Link
Education: PhD.
ResearchGate: Link
Faculty: Faculty of Science
ScholarId: Link
E-mail: hossein.Bevrani [at] uok.ac.ir
ScopusId: Link
Phone:
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Research

Title
COMPARING NUMERICAL AND STATISTICAL METHODS FOR ESTIMATING THE LIKELIHOOD FUNCTION PARAMETERS
Type
Presentation
Keywords
Expectation-Maximization algorithm; Newton-Raphson method; Stochastic Expectation-Maximization.
Year
2024
Researchers Soheila Akbari Bargoshadi ، Hossein Bevrani

Abstract

The objective of this article is to compare numerical and statistical methods for estimating the maximum likelihood parameters in a given distribution when closed-form solutions are not available due to the shape of the density function. To address this, we utilize numerical and statistical methods such as the Newton-Raphson method, the Expectation-Maximization algorithm, and the Stochastic Expectation-Maximization algorithm. We aim to compare these methods in terms of bias mean, average of mean squared error, runtime of the program, and the maximum value of the log- likelihood function. Specifically, we investigate the application of these methods for estimating parameters in the Poisson-Exponential distribution under the joint type-II censoring scheme. By analyzing the performance of these methods, we contribute to the understanding of their effectiveness and limitations in this context.