How to know if the decision tree is overfitting or underfitting?

heretolearn
heretolearn New Altair Community Member
edited November 5 in Community Q&A
How to know if the decision tree is overfitting or underfitting? Is the accuracy relating to that?
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Answers

  • RolandJones
    RolandJones
    Altair Employee
    Hi @heretolearn,

    In general, we use some form of validation to understand if the trained model performs similarly on some sort of testing or hold-out set. We do this to check performance is similar on a representative dataset that the model hasn't seen whilst training.

    We have some nice resources on RapidMiner Academy on model validation: https://academy.rapidminer.com/learn/dashboard?query=validation

    Hope this helps. Happy to point you towards something particular if needed.

    Best,
    Roland


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