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logLik.gnlsStruct: Log-Likelihood of a gnlsStruct Object

Description

Pars is used to update the coefficients of the model components of object and the individual log-likelihood contributions of each component are added together.

Usage

# S3 method for gnlsStruct
logLik(object, Pars, conLin, ...)

Value

the log-likelihood for the linear model described by object, evaluated at Pars.

Arguments

object

an object inheriting from class gnlsStruct, representing a list of model components, such as corStruct and varFunc objects, and attributes specifying the underlying nonlinear model and the response variable.

Pars

the parameter values at which the log-likelihood is to be evaluated.

conLin

an optional condensed linear model object, consisting of a list with components "Xy", corresponding to a regression matrix (X) combined with a response vector (y), and "logLik", corresponding to the log-likelihood of the underlying nonlinear model. Defaults to attr(object, "conLin").

...

some methods for this generic require additional arguments. None are used in this method.

Author

José Pinheiro and Douglas Bates bates@stat.wisc.edu

See Also

gnls, gnlsStruct, logLik.gnls