zhijie zhang a ?crit :
Dear Noel, Your answers should be what i'm looking for. Could u please show me the corresponding programs and the paper/book for the theories?
I usually fit these models as conditional Poisson loglinear models, so the glm() function may be used. On the equivalence of binomial (or multinomial) and loglinear models (conditionally to joint counts on the independent variables), see chapter 2 of: Lindsey, J.K (1999). Applying Generalized Linear Models, Springer. Also take a look at: https://home.comcast.net/~lthompson221/Splusdiscrete2.pdf I have a small script that does the job, with an example script that should be self-explanatory: http://yvonnick.noel.free.fr/r2stats/multinom.R http://yvonnick.noel.free.fr/r2stats/mnm-example.R Yvonnick Noel U. of Rennes 2 France