Re: [R] Question on: Random Forest Variable Importance for RegressionProblems

reg.s...@imail.org 801.408.8111 > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Mareike Ließ > Sent: Wednesday, April 28, 2010 12:35 PM > To: Liaw, Andy > Cc: r-help@r-project.org > Subject: Re: [R] Question

Re: [R] Question on: Random Forest Variable Importance for RegressionProblems

Well, explanation on "importance" says, that for regression the first column (%IncMSE) is the mean decrease in accuracy and the second ("IncNodePurity") the mean decrease in MSE. Dose not make much sense at all. I do not know what "%IncMSE" stands for. Alright, MSE= mean square error", but of w

Re: [R] Question on: Random Forest Variable Importance for RegressionProblems

I would have thought that the help page for importance() is an (the?) obvious place to look... If that description is not clear, please let me know which part isn't clear to you. Andy From: Mareike Lies > > I am trying to use the package RandomForest performing regression. > The variable impo