I am currently using weka-3-2 implementing a classification with continuous
class. And M5Prime regression tree and model tree are chosen to be the
Acouple of questions are raised after several running:
1. M5 will only have binary split on all attributes. How does this binary
split on multiple-level nominal attribute? Does it make sense on real case?
I mean if Marrital Status has Married, Single and Seperated. Why is it
nessary to group Marrid and Single together after binary split?
2. What is the threshold for Infomation gain? and SDR(standard deviation