CHAID as a decision tree (not just to combine categories in a variable)
backlog
V
Vian de Villiers
Allow users to use CHAID to create non-binary predictive trees, with more nodes. Currently CART analysis works, but it can only provide users with two nodes in the tree.
See the attached example. It would also be great if users could create a tree as per the example, and also have the option to format it a bit more i.e. colors of the boxes, text size in the boxes etc.
J
Justin Lew
backlog
J
Jamie Morris
under review
J
James Mott
I believe this feature is long over due. From my experience, CHAID is more unstandable to many users than C&RT. More users are familiar with how Chi-Square works than Impurity. To me an important part of using an algorithm is being able to explain how it works. CHAID fits this requirement better than C&RT. Also, binary splits are not universally popular with everyone. This is not to say that CHAID is better than C&RT, they both have their strong points. However, I believe it is important to give customers a choice rather than steering them to just one algorithm.