R help - Nov 2005 - Choosing the data type to improve accuracy in SVM, PPR and randomForest

Dear all,

This question is not a pure R question but I believe it is quite related.

I am trying to find some literature (without success) about the most appropriate
type for the data I am using. For example: day of the week is it better
represented as a factor or as a number? I am trying to answer this for SVM, PPR
and randomForest.

Thanks for any help

Joao Moreira