Return the log likelihood value
Return the log likelihood value of objects of class maxLik
and summary.maxLik.
## S3 method for class 'maxLik' logLik( object, ... ) ## S3 method for class 'summary.maxLik' logLik( object, ... )
object |
object of class |
... |
additional arguments to methods |
A scalar numeric, log likelihood of the estimated model. It has attribute “df”, number of free parameters.
Arne Henningsen, Ott Toomet
## ML estimation of exponential duration model: t <- rexp(100, 2) loglik <- function(theta) log(theta) - theta*t gradlik <- function(theta) 1/theta - t hesslik <- function(theta) -100/theta^2 ## Estimate with analytic gradient and hessian a <- maxLik(loglik, gradlik, hesslik, start=1) ## print log likelihood value logLik( a ) ## print log likelihood value of summary object b <- summary( a ) logLik( b )
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