AIC(object)
object
|
an object inheriting from class logLik , usually
resulting from applying a logLik method to a fitted model
object.
|
logLik
, according to the formula
2*log-likelihood + 2*npar, where
npar represents the number of parameters in the fitted
model. When comparing fitted objects, the smaller the AIC, the better
the fit.AIC
, logLik
, BIC
data(Orthodont) fm1 <- lm(distance ~ age, data = Orthodont) AIC(logLik(fm1))