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The three-parameter Weibull distribution is a continuous distribution widely used in the study of reliability and life data. The estimation of the distribution parameters is an important problem that has received a lot of attention by researchers because of theirs effects in several measurements. In this research, we propose a particle swarm optimization (PSO) to estimate the three-parameter Weibull distribution and then to estimate the reliability and hazard functions. The real data results indicate that our proposed estimation method is significantly consistent in estimation compared to the maximum likelihood method. In terms of log likelihood and mean time to failure (MTTF). 


Reliability particle swarm optimization 3-parameter weibull distribution Maximum likelihood

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How to Cite
Algamal, Z. Y., & Basheer, G. (2021). Reliability Estimation of Three Parameters Weibull Distribution based on Particle Swarm Optimization. Pakistan Journal of Statistics and Operation Research, 17(1), 35-42.


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