Extract corStruct Log-Likelihood
Usage
logLik(object, data)
Arguments
object
|
an object inheriting from class corStruct ,
representing a correlation structure.
|
data
|
this argument is included to make this method function
compatible with other logLik methods and will be ignored.
|
Description
This method function extracts the component of a Gaussian
log-likelihood associated with the correlation structure, which is
equal to the negative of the logarithm of the determinant (or sum of
the logarithms of the determinants) of the matrix (or matrices)
represented by object
.Value
the negative of the logarithm of the determinant (or sum of
the logarithms of the determinants) of the correlation matrix (or
matrices) represented by object
.Author(s)
Jose Pinheiro and Douglas BatesSee Also
logDet.corStruct
Examples
library(lme)
data(Orthodont)
cs1 <- corAR1(0.2)
cs1 <- initialize(cs1, data = Orthodont)
logLik(cs1)