sfaR (version 1.0.0)

fitted: Extract fitted values of stochastic frontier models

Description

fitted returns the fitted frontier values from stochastic frontier models estimated with sfacross, sfalcmcross, or sfaselectioncross.

Usage

# S3 method for sfacross
fitted(object, ...)
# S3 method for sfalcmcross
fitted(object, ...)
# S3 method for sfaselectioncross
fitted(object, ...)

Value

In the case of an object of class 'sfacross', or 'sfaselectioncross', a vector of fitted values is returned.

In the case of an object of class 'sfalcmcross', a data frame containing the fitted values for each class is returned where each variable ends with '_c#', '#' being the class number.

Arguments

object

A stochastic frontier model returned by sfacross, sfalcmcross, or sfaselectioncross.

...

Currently ignored.

See Also

sfacross, for the stochastic frontier analysis model fitting function using cross-sectional or pooled data.

sfalcmcross, for the latent class stochastic frontier analysis model fitting function using cross-sectional or pooled data.

sfaselectioncross for sample selection in stochastic frontier model fitting function using cross-sectional or pooled data.

Examples

if (FALSE) {
## Using data on eighty-two countries production (GDP)
# LCM Cobb Douglas (production function) half normal distribution
cb_2c_h <- sfalcmcross(formula = ly ~ lk + ll + yr, udist = 'hnormal', 
data = worldprod)
fit.cb_2c_h <- fitted(cb_2c_h)
head(fit.cb_2c_h)
}