modify

search/views/pick.py

@@ -76,6 +76,14 @@ def pick_topic(user_id,pick_id,offset=0,size=10):
             {
                 "filter": {"match": {"content_level": 3}},
                 "weight": 2
+            },
+            {
+                "gauss": {
+                    "update_time": {
+                        "scale": "1d",
+                        "decay": 0.5
+                    }
+                }
             }
         ]
 
@@ -94,7 +102,7 @@ def pick_topic(user_id,pick_id,offset=0,size=10):
                 }
             },
             "score_mode": "sum",
-            "boost_mode": "sum",
+            "boost_mode": "replace",
             "functions":functions_list
         }