Keywords : maximum likelihood estimator

Use the PSO algorithm to estimate the Cox process parameters.

Mohammed zaid Hussain; Muthanna Sulaiman

IRAQI JOURNAL OF STATISTICAL SCIENCES, 2020, Volume 17, Issue 1, Pages 1-15
DOI: 10.33899/iqjoss.2020.165442

In this paper it was proposed to use the PSO algorithm to estimate the time interval of the Cox process. The results of the proposed method of estimation were compared with the maximum likelihood estimator of estimating the rate of occurrence. The research included a realistic application in which the successive operating periods between two consecutive stops of the raw material mill in per day (from the General Company for Northern Cement / Cement Badush new plant) during the period from 1/4/2018 to 31/1/2019. The average time for machine operating periods was estimated by the methods proposed for use in the research,

Estimation of Reliability Function for Complete Data - Article Review

Shaimaa Waleed

IRAQI JOURNAL OF STATISTICAL SCIENCES, 2019, Volume 16, Issue 3, Pages 25-38
DOI: 10.33899/iqjoss.2019.164172

The theory of reliability is one of the important theories that is attracting great interest in many researchers at present because of its importance in various fields of life especially in determining the age of a particular device and its efficiency and the addition of applications in the field of radar and atmospheric and astronomical observation. The growing interest in reliability studies is due to the rapid technical and technological development and the use of complex systems in various fields. This paper reviews the article of reliability in terms of the reliability function for complete data  of one of the failure time distributions (weibull distribution) and its parameters in different methods using simulation.