[R] Logistic Regression with 9 classes

[Luis Silva]

Hello!

I need to classify a data set with 19 variables and 9 classes 
using Logistic Regression(on R).
I know that when we have only 2 classes we can use glm() to 
estimate the coefficients of the model. But I don´t understand 
how can I do a classification task with Logistic Regression on 
a data set with 9 classes! 
Does anybody know how can I estimate these coefficients (of a 
model with 9 classes) on R?

Thank you!
Janete

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