logLik: Extract Log-Likelihood

In CDM: Cognitive Diagnosis Modeling

Extract Log-Likelihood

Description

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

Usage

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

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

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

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

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

## S3 method for class '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)

CDM documentation built on Aug. 25, 2022, 5:08 p.m.