readFront41out {micEcon}R Documentation

Read output of Frontier 4.1

Description

Read the output file of Coelli's program Frontier 4.1 that performs stochastic frontier analysis.

Usage

   readFront41out( file = "front41.out", translog = FALSE )

Arguments

file character variable with the name of the file to read.
translog logical. Is the estimated function a translog function? (not implemented yet).

Value

a list of class front41out containing following objects:

version the version of Frontier 4.1 that produced the output.
insFile name of the instruction file used by Frontier 4.1.
dtaFile name of the data file used by Frontier 4.1.
modelType model type: either 1 for 'Error Components Frontier' or 2 for 'Tech. Eff. Effects Frontier'.
modelTypeName model type: 'Error Components Frontier' or 'Tech. Eff. Effects Frontier'.
functionType function type: either 1 for 'production function' or 2 for 'cost function'.
functionTypeName function type: 'production function' or 'cost function'.
logDepVar logical. Is the dependent variable logged.
olsResults results of the OLS estimation.
nXvars number X variables (exogenous variables of the production or cost function.
olsLogl log likelihood value of the OLS estimation.
gridResults results of the grid search.
mleResults results of the maximum likelihood estimation.
mleLogl log likelihood value of the maximum likelihood estimation.
mleCov coefficient covariance matrix of the maximum likelihood estimation.
efficiency technical efficiency estimates.

Author(s)

Arne Henningsen ahenningsen@agric-econ.uni-kiel.de

References

Battese, G.E. and T. Coelli (1992), Frontier production functions, technical efficiency and panel data: with application to paddy farmers in India. Journal of Productivity Analysis, 3, 153-169.

Battese, G.E. and T. Coelli (1995), A model for technical inefficiency effects in a stochastic frontier production function for panel data. Empirical Economics, 20, 325-332.

Coelli, T. (1996) A Guide to FRONTIER Version 4.1: A Computer Program for Stochastic Frontier Production and Cost Function Estimation, CEPA Working Paper 96/08, http://www.uq.edu.au/economics/cepa/frontier.htm, University of New England.

See Also

writeFront41in

Examples

   data( Coelli )
   Coelli$logOutput  <- log( Coelli$output )
   Coelli$logCapital <- log( Coelli$capital )
   Coelli$logLabour  <- log( Coelli$labour )

   writeFront41in( Coelli, "firm", "time", "logOutput",
      c( "logCapital", "logLabour" ) )

   ## Not run: 
   system( "wine front41.exe" )
   sfa <- readFront41out()
   sfa$mleResults
   sfa$efficiency
   
## End(Not run)

[Package micEcon version 0.1-6 Index]