nonnest2 (version 0.5-8)

llcont: Individual Log-Likelihoods

Description

Obtain log-likelihood values associated with individual observations, evaluated at the ML estimates.

Usage

llcont(x, ...)

Value

An object of class numeric containing individuals' contributions to the log-likelihood. The sum of these contributions equals the model log-likelihood.

Arguments

x

a model object

...

arguments passed to specific methods

Author

Ed Merkle, Dongjun You, Lennart Schneider, Mauricio Garnier-Villarreal, and Phil Chalmers

Details

This is a S3 generic function. Currently, the method is defined for lm, glm, glm.nb, clm, hurdle, zeroinfl, mlogit, nls, polr, rlm, lavaan, vglm, mirt, and OpenMx objects.

Examples

## Fit gamma glm, check that sum of llcont() equals
## the model loglikelihood:
clotting <- data.frame(u = c(5,10,15,20,30,40,60,80,100),
                       lot1 = c(118,58,42,35,27,25,21,19,18),
                       lot2 = c(69,35,26,21,18,16,13,12,12))
gam1 <- glm(lot1 ~ log(u), data = clotting, family = Gamma)
sum(llcont(gam1))
logLik(gam1)