Spatial Stochastic Frontier Analysis
SSFA efficiency
SSFA fitted values
SFA half-normal log likelihood function
SSFA half-normal log likelihood function
SSFA plot
SSFA residuals Moran plot
SSFA residuals
Spatial Stochastic Frontier models
Spatial stochastic frontier estimation
SSFA summaries
SSFA inefficiency
Spatial Stochastic Frontier Analysis (SSFA) is an original method for controlling the spatial heterogeneity in Stochastic Frontier Analysis (SFA) models, for cross-sectional data, by splitting the inefficiency term into three terms: the first one related to spatial peculiarities of the territory in which each single unit operates, the second one related to the specific production features and the third one representing the error term.