diff --git a/learnware/market/evolve.py b/learnware/market/evolve.py
index 8912700..7b24548 100644
--- a/learnware/market/evolve.py
+++ b/learnware/market/evolve.py
@@ -39,4 +39,4 @@ class EvolvedMarket(BaseMarket):
         id_list : List[str]
             Id list for learnwares
         """
-        pass
+        pass
\ No newline at end of file
diff --git a/learnware/market/evolve_anchor.py b/learnware/market/evolve_anchor.py
index ef88479..55c8192 100644
--- a/learnware/market/evolve_anchor.py
+++ b/learnware/market/evolve_anchor.py
@@ -37,17 +37,3 @@ class EvolvedAnchoredMarket(AnchoredMarket, EvolvedMarket):
             User information with statistics calculated on anchors
         """
         pass
-
-    def evolve_learnware_by_user(self, learnware_id: str, user_info: AnchoredUserInfo):
-        """
-            Enable leanrwares to evolve based on user info
-            - e.g., When we estimate the performance of a specific learnware on user tasks, we can further refine the update of the learnware specification
-
-        Parameters
-        ----------
-        learnware_id : str
-            Leanrware id
-        user_info : AnchoredUserInfo
-            User information with statistics calculated on anchors
-        """
-        pass