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Pessimistic Pruning

MadcapMadcap Member Posts: 14 Contributor I
Hi, I was hoping someone could explain (simply!) how pessimistic pruning works in relation to post pruning decision trees and how confidence level comes into it?
I understand it is similar to cost complexity however if I am being honest I don't have the best grasp of that either.
I have been on the Decision Tree page from RapidMiner but it didn't give me much of a hint.
Thanks for any help!
-Madcap
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  • MadcapMadcap Member Posts: 14 Contributor I
    Thanks for your help guys.
    This community is great for helping out people.
    -Madcap
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