El análisis empírico de la productividad de las infraestructuras se ha enfrentado a múltiples problemas econométricos que parecen estar detrás de la gran variabilidad en los resultados obtenidos en la literatura. Uno de esos problemas es la multicolinealidad existente al estimar los...

The Customer Lifetime Value (CLV ) concept has been highly used in the marketing area over the years. In this paper the authors present some useful extensions for the case of uncertain data. In particular, a CLV estimation with triangular fuzzy numbers (TFN) is introduced.

Spanish Abstract: El objetivo principal del presente trabajo, es analizar el efecto que tiene la educación, la edad, el acceso a TIC's y activos físicos y financieros, además de otras características personales y socioeconómicas, en la probabilidad de ser trabajador por cuenta propia,...

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...

This research shows the application and performance of three models for the classification of credit applicants: discriminant analysis, logistic regression and neural networks; techniques used by financial institutions for the calculation of credit scoring. The results show a better performance...

This work analyzes the use of the train by the Galician companies when they do business transactions with northern Portuguese operators. The residual usage of this infrastructure (0.01 of all the transactions) is proved opposite the masive use of the truck; factors that explain the choice and...

En este documento se presenta la descripción y los resultados de la estimación de la estructura a plazos de las tasas de interés en Colombia utilizando el método de funciones B-spline cúbicas. Adicionalmente, se llevan a cabo comparaciones entre los resultados obtenidos a través de esta...

In this paper we introduce two general non-parametric first-order stationary time-series models for which marginal (invariant) and transition distributions are expressed as infinite-dimensional mixtures. That feature makes them the first Bayesian stationary fully non-parametric models developed...

This work analyzes the use of the train by the Galician companies when they do business transactions with northern Portuguese operators. The residual usage of this infrastructure (0.01 of all the transactions) is proved opposite the masive use of the truck; factors that explain the choice and...

This work analyzes the use of the train by the Galician companies when they do business transactions with northern Portuguese operators. The residual usage of this infrastructure (0.01 of all the transactions) is proved opposite the masive use of the truck; factors that explain the choice and...