Creator functions for the concomitant variable
model. FLXPconstant specifies constant priors
and FLXPmultinom multinomial logit models for the priors.
FLXPconstant()
FLXPmultinom(formula = ~1)A formula for determining the model matrix of the concomitant variables.
Object of class FLXP. FLXPmultinom returns an
object of class FLXPmultinom which extends class
FLXP directly and is used for method dispatching.
FLXPmultinom uses nnet.default from nnet to fit the
multinomial logit model.