On Thu, 21 Feb 2008, Luís Paulo F. Garcia wrote:
In nnet.formula(classe ~ ., data = treinamento_data, size = 10, : group
Class is empty
What does this mean?
Well, you are the best placed to tell us as we don't have a reproducible
example (see the footer) and you do.
But at a guess, 'classe' is a factor with a level 'Class' which has no
examples (because that is what the message says).
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Brian D. Ripley, [EMAIL PROTECTED]
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