docstring fix reflecting scikit-learn#9048

ivannz · ivannz · commit d8187d91b6df · 2019-04-23T12:13:15.000+03:00
diff --git a/sklearn/svm/classes.py b/sklearn/svm/classes.py
@@ -1372,7 +1372,9 @@ def fit(self, X, y=None, sample_weight=None, **params):
         return self
 
     def decision_function(self, X):
-        """Distance of the samples X to the separating hyperplane.
+        """Signed distance to the enveloping hypersphere.
+
+        Signed distance is positive for an inlier and negative for an outlier.
 
         Parameters
         ----------
