llratio function

Log likelihood ratio test on two fitted models

Performs a log likelihood ratio test on two fitted depmix models. methods

llratio(basemodel, constrainedmodel, ...)

Arguments

• basemodel: Fitted model with a logLik method.
• constrainedmodel: Fitted model with a logLik method.
• ...: Not currently used.

Returns

llratio returns an object of class llratio which has slots:

• value: : Minus twice the loglikelihood difference.

• df: : The degrees of freedom, ie the difference in number of freely estimated paraemters between the models.

The print method shows the value, the degrees of freedom and the corresponding p-value under the chisquared distribution.

Details

See the fit help page for an example.

Author(s)

Ingmar Visser