OOBPredictorImportance How to interpret the values range?

Hello,

To be able to calculate the importance of the predictors for TreeBagger it is needed to turn on the OOBPredictorImportance parameter

Mdl = TreeBagger(200,X,'MPG','Method','regression','Surrogate','on','PredictorSelection','curvature','OOBPredictorImportance','on');

I would like to know what is the range of the parameters, the results for my regression is beetween 0 and 1.5, is that good? bad? What more conclusions can I draw from that vector?

Thanks for your time!

Tiago

Answer 1

[Adrian Jacinto]

Hi, really this parameter have no range. This parameter only explain you how important is a band compared to other bands. When you a have a higuest values associated with a band, this indicates that this band is more important than the rest.

You can make the result more visual by applying the bar () function on the OOB vector to make a bar diagram.

[Tiago Dias]

Ok, thanks for you input.

I tought that perhaps it would be on percentage or something like that. IT is more quanlitative then quantitative.