Some New Semiparametric Panel Stochastic Frontier Models

Greene (2002, 2004) examines several extensions of the panel stochastic frontier models including what he calls the “true†fixed and random effect stochastic frontier models. In this paper we extend these two models to their semiparametric alternatives where the functional form for production function (or other forms of technology) is assumed to be unknown. To this end we use the Bayesian penalized approach to stochastic frontiers developed in Hajargasht et al. (2003). Finally we illustrate our estimation method with an example using real data