I run xgboost model with the objective of
rank:ndcg on python.
I want to test manually the prediction by running on trees from dump model function.
my questions are:
- is the result of the model for ranking task is the sum of all each tree leaf?
- is dump model order the trees like the predict does? which mean if I set the
ntree_limitto be 1 I can check only the first tree in the dump?
- is there a problem with the numeric representation using python and dumping it to json?