Splitting the tree
Given the Gini index that would result from splitting by either variable A or B, respectively, decide by which variable the tree should split next.
This exercise is part of the course
HR Analytics: Predicting Employee Churn in Python
Exercise instructions
- Check which Gini is lower.
- If A has lower Gini, split by A, else, split by B.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Gini index in case of splitting by variable A or B
gini_A = 0.65
gini_B = 0.15
# check which Gini is lower and use it for spliting
if ____ < ____:
print("split by A!")
____:
print("split by B!")