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...

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...

The Black-Litterman (BL) model has been proposed as an alternative to Markowitz's average-variance model for the structuring of financial asset portfolios, allowing the incorporation of perspectives of fundamental analysts and guaranteeing a high degree of diversification. This model is applied...

The Black-Litterman (BL) model has been proposed as an alternative to Markowitz's average-variance model for the structuring of financial asset portfolios, allowing the incorporation of perspectives of fundamental analysts and guaranteeing a high degree of diversification. This model is applied...

English Abstract: One of the canonical models in the field of international commodity financial markets modelling is known as the Gibson and Schwartz (1990) model. In this model, the net spot instantaneous convenience yield is modelled through an Ornstein-Uhlenbeck process. Based on this, it is...

Spanish Abstract: Los principales modelos financieros para la estimación del riesgo de mercado suponen que los rendimientosde los activos siguen una distribución Normal o se basan en la distribución empírica. Con frecuencia, elsupuesto de normalidad se da por hecho; sin embargo, resulta poco...