On Fri, 24 Jan 2003, L.E.Gross wrote: > I am wanting to fit some multinomial logit models (multinom command in > package nnet) > > Is it possible to do any model checking techniques on these models > e.g. residual, leverage etc. I cannot seem to find any commands that > will allow me to do this.
residuals() should work: it does for me. Leverage is not AFAIK well-defined: remember you have a multivariate response, and for binomial logit models `leverage' is in the linear approximation to the glm. A multinomial logit model is not a glm, and there is no such linear approximation in use. Also, I have doubts about the usefulness of leverage even for binomial logit models: it's a local approximation when the only possible changes (0 <--> 1) are not local. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
