Extract Log-Likelihood

Extracts the log-likelihood from either din, gdina, mcdina, slca or gdm objects.

# S3 method for din
logLik(object, ...)

# S3 method for gdina
logLik(object, ...)

# S3 method for mcdina
logLik(object, ...)

# S3 method for gdm
logLik(object, ...)

# S3 method for slca
logLik(object, ...)

# S3 method for reglca
logLik(object, ...)

Arguments

object

An object inheriting from either class din, gdina, slca, reglca or gdm.

...

Additional arguments

See also

din, gdina, gdm, mcdina, slca, reglca

Examples

data(sim.dina, package="CDM")
data(sim.qmatrix, package="CDM")

# logLik method | DINA model
d1 <- CDM::din( sim.dina, q.matrix=sim.qmatrix, rule="DINA")
summary(d1)
lld1 <- logLik(d1)
  ##   > lld1
  ##   'log Lik.' -2042.378 (df=25)
  ##   > attr(lld1,"df")
  ##   [1] 25
  ##   > attr(lld1,"nobs")
  ##   [1] 400
nobs(lld1)

# AIC and BIC
AIC(lld1)
BIC(lld1)