Publication: Estimadores Bayesianos de distribuciones Weibull aplicados a un modelo de líneas de espera G/G/s
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Vargas-Sánchez, Jhon Jairo
Causado, Edwin
Mercado, Hugo
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Universidad Pablo de Olavide
Abstract
Se ha estudiado en la literatura la aproximación de los modelos G/G/s a partir de modelos markovianos M/M/s. Un estudio de un modelo de colas se presenta en el presente artículo usando tiempos de llegadas y servicios Weibull distribuidos cuya estimación de parámetros se realizó con el método Bayesiano cadena de Markov Monte Carlo, específicamente el muestreador de Gibbs. La aproximación de este modelo de líneas de espera es evaluada mediante simulación. Esta metodología se aplicó al caso de repartición de refrigerios en la Universidad del Magdalena en Santa Marta, Colombia. Los resultados muestran la utilidad y potencia para calcular indicadores de un sistema de colas cuando los tiempos entre llegadas y de atención se distribuyen como una Weibull.
The approximation of G/G/s models from Markov models M/M/s has been studied in the literature. The study of a queue model is detailed in the present article, using times of arrivals and time service distributed by Weibull whose estimation of parameters was performed with the Bayesian method Monte Carlo Markov chain, specifically the Gibbs sampler. The approximations of this model of waiting lines is evaluated by simulation. This methodology was applied to the case of delivery of refreshments to students of the University of Magdalena in Santa Marta, Colombia. The results show the utility and power to calculate indicators of a queue system when both, the arrival and attention times, are distributed as a Weibull.
The approximation of G/G/s models from Markov models M/M/s has been studied in the literature. The study of a queue model is detailed in the present article, using times of arrivals and time service distributed by Weibull whose estimation of parameters was performed with the Bayesian method Monte Carlo Markov chain, specifically the Gibbs sampler. The approximations of this model of waiting lines is evaluated by simulation. This methodology was applied to the case of delivery of refreshments to students of the University of Magdalena in Santa Marta, Colombia. The results show the utility and power to calculate indicators of a queue system when both, the arrival and attention times, are distributed as a Weibull.
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Revista de métodos cuantitativos para la economía y la empresa, ISSN-e 1886-516X, Vol. 30, 2020, págs. 142-162




