Explanation predictorImportance - Ensemble Learning with Decision Trees

2020 8 20
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更新时间：2020 8 28
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Hey,
I try to understand what the function predictorImportance is doing when using Ensemble Learning with Decision Trees. The Matlab documentation is not really comprehensive :/. What is meant by "risk"?
https://de.mathworks.com/help/stats/compactclassificationensemble.predictorimportance.html#bst1mzv-6

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回答（1 个）

Prabhan Purwar
Prabhan Purwar 2020-8-28

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Hi,
Our implementation of 'predictorImportance' can be viewed directly within the 'TreeImpl' class.
This file is located in your MATLAB installation folder:
MATLAB\R2017a\toolbox\stats\classreg\+classreg\+learning\+impl\TreeImpl.m
(Kindly fill up the matlab version accordingly).
You can use Control + F in order to find "predictorImportance"; there you can view the implementation.
Thanks.

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