[docs][python][scikit-learn] added note for LGBMRanker (#4243)

microsoft · Apr 30, 2021 · 023dc53 · 023dc53
1 parent 91f72e2
commit 023dc53
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/python-package/lightgbm/sklearn.py b/python-package/lightgbm/sklearn.py
@@ -952,7 +952,14 @@ def n_classes_(self):
 
 
 class LGBMRanker(LGBMModel):
-    """LightGBM ranker."""
+    """LightGBM ranker.
+
+    .. warning::
+
+        scikit-learn doesn't support ranking applications yet,
+        therefore this class is not really compatible with the sklearn ecosystem.
+        Please use this class mainly for training and applying ranking models in common sklearnish way.
+    """
 
     def fit(self, X, y,
             sample_weight=None, init_score=None, group=None,