[R] memory problems when combining randomForests

Eleni Rapsomaniki e.rapsomaniki at mail.cryst.bbk.ac.uk
Mon Jul 31 11:56:12 CEST 2006


I've just realised attachments are not allowed, so the data for the example in
my previous message is:



And my last two questions (promise!): 
The first is related to the order of columns (ie. explanatory variables). I get
different order of importance for my variables depending on their order in the
training data. Is there a parameter I could fiddle with (e.g. ntree) to get a
more stable importance order?

And finally, since interactions are not implemented, is there another method I
could use in R to find dependencies among categorical variables? (lm doesn't
accept categorical variables).

Many thanks
Eleni Rapsomaniki
Birkbeck College, UK

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