Simwaka, Kisu (2012): Maximum likelihood estimation of a stochastic frontier model with residual covariance.
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In theoretical literature on productivity, the disturbance terms of the stochastic frontier model are assumed to be independent random variables. In this paper, we consider a stochastic production frontier model with residuals that are both spatially and time-wise correlated. We introduce generalizations of the Maximum Likelihood Estimation procedure suggested in Cliff and Ord (1973) and Kapoor (2003). We assume the usual error component specification, but allow for possible correlation between individual specific errors components. The model combines specifications usually considered in the spatial literature with those in the error components literature. Our specifications are such that the model’s disturbances are potentially spatially correlated due to geographical or economic activity. For instance, for agricultural farmers, spatial correlations can represent productivity shock spillovers, based on geographical proximity and weather. These spillovers effect estimation of efficiency.
|Item Type:||MPRA Paper|
|Original Title:||Maximum likelihood estimation of a stochastic frontier model with residual covariance|
|English Title:||Maximum likelihood estimation of a stochastic frontier model with residual covariance|
|Keywords:||spatial stochastic production frontier models, correlated errors|
|Subjects:||C - Mathematical and Quantitative Methods > C2 - Single Equation Models; Single Variables > C23 - Models with Panel Data; Longitudinal Data; Spatial Time Series
C - Mathematical and Quantitative Methods > C2 - Single Equation Models; Single Variables > C24 - Truncated and Censored Models; Switching Regression Models
C - Mathematical and Quantitative Methods > C2 - Single Equation Models; Single Variables > C21 - Cross-Sectional Models; Spatial Models; Treatment Effect Models; Quantile Regressions
|Depositing User:||Kisu Simwaka|
|Date Deposited:||28. Jun 2012 17:54|
|Last Modified:||15. Feb 2013 20:40|
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