R help - Apr 2008 - random forest varimp

Friends,
I have noticed that many publications that use RF report variable importance as
a function of mean decrease in accuracy rather than mean decrease in gini. Am I
correct that the mean decrease in accuracy is just the mean decrease in gini
divided by 100?

Thanks,
Helen Mills Poulos
Yale School of Forestry

Please see the "Details" section of ?importance in the package.

Andy 

From: helen.mills at yale.edu
> 
> Friends,
> I have noticed that many publications that use RF report 
> variable importance as
> a function of mean decrease in accuracy rather than mean 
> decrease in gini. Am I
> correct that the mean decrease in accuracy is just the mean 
> decrease in gini
> divided by 100?
> 
> Thanks,
> Helen Mills Poulos
> Yale School of Forestry
> 
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