[Depmix-commits] r333 - trunk/man

[noreply at r-forge.r-project.org]

Author: ingmarvisser
Date: 2010-01-29 15:25:08 +0100 (Fri, 29 Jan 2010)
New Revision: 333

Modified:
   trunk/man/GLMresponse.Rd
Log:
Added info on multinomial with identity link function.

Modified: trunk/man/GLMresponse.Rd
===================================================================
--- trunk/man/GLMresponse.Rd	2010-01-29 14:15:29 UTC (rev 332)
+++ trunk/man/GLMresponse.Rd	2010-01-29 14:25:08 UTC (rev 333)
@@ -54,9 +54,15 @@
 	\code{multinomial}.  Except for the latter option, the
 	\code{GLMresponse} model is an interface to the \code{glm} functions of
 	which the functionality is used: predict, fit and density functions.
-	The \code{multinomial} model uses functionality from the \code{nnet}
-	package to fit multinomial logistic models.	
 	
+	The \code{multinomial} model takes as link functions \code{mlogit}, the
+	default, and then uses functionality from the \code{nnet} package to
+	fit multinomial logistic models; it also takes \code{identity} as a
+	link function.  The latter is typically faster and is hence preferred
+	when no covariates are present.  Note that the sum constraint inherent
+	in such a model is automatically respected in the EM algorithm, but
+	must be supplied by the user in case of using Rdonlp optimization.
+	
 	See the \code{\link{responses}} help page for examples. 
 	
 }