FIX: LOF with QuantileFilter raises IndexError

online-ml · Oct 3, 2023 · eaae52b · eaae52b
1 parent 1a32e0d
commit eaae52b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/river/anomaly/lof.py b/river/anomaly/lof.py
@@ -342,8 +342,8 @@ def score_one(self, x: dict):
         self.x_scores.append(x)
         self.x_scores, equal = check_equal(self.x_scores, self.x_list)
 
-        if len(self.x_scores) == 0:
-            return None
+        if len(self.x_scores) == 0 or len(self.x_list) == 0:
+            return 0.5
 
         x_list_copy = self.x_list.copy()
         (