Extracts the log-likelihood function for a fitted parametric model.
Usage
# S3 method for class 'bellreg'
logLik(object, ...)
Arguments
- object
a fitted model of the class bellreg
- ...
further arguments passed to or from other methods.
Value
the log-likelihood value when a single model is passed to the function; otherwise, a data.frame with the log-likelihood values and the number of parameters is returned.
Examples
# \donttest{
library(bellreg)
data(faults)
fit1 <- bellreg(nf ~ 0 + lroll, data = faults, approach = "mle")
fit2 <- bellreg(nf ~ lroll, data = faults, approach = "mle")
logLik(fit1, fit2)
#> fit loglik npars
#> 1 fit2 -88.96139 2
#> 2 fit1 -93.13583 1
# }