R: Log-Likelihood value of an object of class aidsEst
logLik.aidsEst
R Documentation
Log-Likelihood value of an object of class aidsEst
Description
This method extracts the log-likelihood value
of a fitted Almost Ideal Demand System (AIDS)
Usage
## S3 method for class 'aidsEst'
logLik( object, ... )
Arguments
object
an object of class aidsEst.
...
currently ignored.
Value
A numeric scalar (the log-likelihood value) with 2 attributes:
nobs (total number of observations in all equations) and
df (number of free parameters, i.e. coefficients
+ elements of the residual covariance matrix).
Author(s)
Arne Henningsen
See Also
aidsEst.
Examples
# Using data published in Blanciforti, Green & King (1986)
data( Blanciforti86 )
# Data on food consumption are available only for the first 32 years
Blanciforti86 <- Blanciforti86[ 1:32, ]
## Repeating the demand analysis of Blanciforti, Green & King (1986)
estResult <- aidsEst( c( "pFood1", "pFood2", "pFood3", "pFood4" ),
c( "wFood1", "wFood2", "wFood3", "wFood4" ), "xFood",
data = Blanciforti86, priceIndex = "SL" )
logLik( estResult )