I am trying to use interaction constraints in my exercise. I have give interaction_constraints="[[10,11],[0,1,2,3,4,5,6,7,8,9,10]]" as parameter to my model. Now based on this documentation (https://xgboost.readthedocs.io/en/latest/tutorials/feature_interaction_constraint.html),if there is a split on x11 then next split can only have either x10 or x11 as mentioned below.
** 1:[f10<1] yes=3,no=4,missing=3**
My question is now that the next split after f10 can split on any other features as well right? But i am not observing this trend. I have tried many iterations. And everytime, I am getting the whole tree developed on f10 and f11 without using any other variables.