Document behavior of get_fscore() for zero-importance features (dmlc#…

…3763)
sagunb · Oct 8, 2018 · ea99b53 · ea99b53
1 parent 10cd7c8
commit ea99b53
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/python-package/xgboost/core.py b/python-package/xgboost/core.py
@@ -1395,6 +1395,11 @@ def get_fscore(self, fmap=''):
             learner (`booster=gbtree`). It is not defined for other base learner types, such
             as linear learners (`booster=gblinear`).
 
+        .. note:: Zero-importance features will not be included
+
+           Keep in mind that this function does not include zero-importance feature, i.e.
+           those features that have not been used in any split conditions.
+
         Parameters
         ----------
         fmap: str (optional)