Modelos de frontera estocástica con errores dependientes basados en márgenes normal y exponencial
DOI:
https://doi.org/10.46661/revmetodoscuanteconempresa.2684Keywords:
technical and cost efficiencies, stochastic frontier, marginal distribution, dependence, Sarmanov model, eficiencias técnica y de coste, frontera estocástica, distribución marginal, dependencia, modelo de SarmanovAbstract
Following the recent work of Gómez-Déniz and Pérez-Rodríguez (2014), this paper extends the results obtained there to the normal-exponential distribution with dependence. Accordingly, the main aim of the present paper is to enhance stochastic production frontier and stochastic cost frontier modelling by proposing a bivariate distribution for dependent errors which allows us to nest the classical models. Closed-form expressions for the error term and technical efficiency are provided. An illustration using real data from the econometric literature is provided to show the applicability of the model proposed.
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