What does encircle values mean and stands for ? Where it come from?

MunchCrunch19
MunchCrunch19 New Altair Community Member
edited November 5 in Community Q&A

Best Answer

  • BalazsBarany
    BalazsBarany New Altair Community Member
    Answer ✓
    Hi!

    The values refer to the attribute that was selected for the split. In the first split, petal length, in the second one, petal width. 

    When a decision tree splits a numerical attribute, it searches for a value that cleanly separates a class from others. The values were automatically chosen. 

    In your case, you can read the tree like this:
    If petal length is <= 1.9, then the class is Iris setosa.
    If petal length is >  1.9 and petal width is <= 1.7, then the class is Iris versicolor in most of the cases.
    Else it's Iris virginica.

    Regards,
    Balázs

Answers

  • BalazsBarany
    BalazsBarany New Altair Community Member
    Answer ✓
    Hi!

    The values refer to the attribute that was selected for the split. In the first split, petal length, in the second one, petal width. 

    When a decision tree splits a numerical attribute, it searches for a value that cleanly separates a class from others. The values were automatically chosen. 

    In your case, you can read the tree like this:
    If petal length is <= 1.9, then the class is Iris setosa.
    If petal length is >  1.9 and petal width is <= 1.7, then the class is Iris versicolor in most of the cases.
    Else it's Iris virginica.

    Regards,
    Balázs
  • MartinLiebig
    MartinLiebig
    Altair Employee
    Hi,
    out of curiosity:
    where does this image come from? This does not look like a RapidMiner screenshot?

    Cheers,
    Martin
  • MunchCrunch19
    MunchCrunch19 New Altair Community Member
    @mschmitz it comes from Orange data mining. 

    Regards