Decision Trees Help

IraIra Member Posts: 1 Newbie
Hello people! I have a problem, for a school projekt I have to learn how decision trees are working. So I used a demo data set from the book to build a decionion tree, I did everything just like it was in the book but  my tree is very different from the tree in the book. Can some one help me to solve this problem?Thank you in advance

Answers

  • yyhuangyyhuang Administrator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 364 RM Data Scientist
    Ira,

    Thanks for sharing your screenshots and findings. If you used the default set up of the derision tree, the "pruning" and "pre-pruning" will be automatically enabled to simply the tree and avoid overfitting. 

    There are some other parameters that can change the tree structure, max_depth, min_leaf_size, etc. The tree from the text book obviously have not been pruned that comes with more branches.



    Cheers,
    YY
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