Modelling multi-output stochastic frontiers using copulas

نویسندگان

  • Alessandro Carta
  • Mark F. J. Steel
چکیده

The aim of this work is to introduce a new econometric methodology for multioutput production frontiers. In the context of a system of frontier equations, we use a flexible multivariate distribution for the inefficiency error term. This multivariate distribution is constructed through a copula function which allows for separate modelling of the marginal inefficiency distributions and the dependence. We pay specific attention to the elicitation of a sensible (improper) prior and provide a simple sufficient condition for posterior propriety. Inference is conducted through a Markov chain Monte Carlo sampler. We use Bayes factors to compare various copula specifications in the empirical context of Dutch dairy farm data, with two outputs. JEL classification: C11, C15, C23, D24

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عنوان ژورنال:
  • Computational Statistics & Data Analysis

دوره 56  شماره 

صفحات  -

تاریخ انتشار 2012