The final tree has 5 nodes with
3 terminal nodes
Elements 10, 11 and 1. are the three most notable Lupus data features. Compared to the other
factors, they have the greatest relevance.
The complexity of a tree decreases after increasing the minimum number of
cases for the parent node from 25 to 30 and the child node from 12 to 15. While
the accuracy of the testing set reduced, the accuracy of the training set
improved. It is possible to justify the reduction in complexity by increasing the
minimum number of cases in the child node, which may result in a child not
having enough cases so that the parent will not be further separated.