diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 6d799a050131871b7ba9d6b4b75a0b8a1f63b4f8..565c3479979a778f5cce6026b527df159f3ed8ec 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -24,29 +24,5 @@
         <option name="ITERATION_ELEMENTS_WRAPPING" value="chop_down_if_not_single" />
       </formatting-settings>
     </DBN-SQL>
-    <DBN-PSQL>
-      <case-options enabled="false">
-        <option name="KEYWORD_CASE" value="lower" />
-        <option name="FUNCTION_CASE" value="lower" />
-        <option name="PARAMETER_CASE" value="lower" />
-        <option name="DATATYPE_CASE" value="lower" />
-        <option name="OBJECT_CASE" value="preserve" />
-      </case-options>
-      <formatting-settings enabled="false" />
-    </DBN-PSQL>
-    <DBN-SQL>
-      <case-options enabled="false">
-        <option name="KEYWORD_CASE" value="lower" />
-        <option name="FUNCTION_CASE" value="lower" />
-        <option name="PARAMETER_CASE" value="lower" />
-        <option name="DATATYPE_CASE" value="lower" />
-        <option name="OBJECT_CASE" value="preserve" />
-      </case-options>
-      <formatting-settings enabled="false">
-        <option name="STATEMENT_SPACING" value="one_line" />
-        <option name="CLAUSE_CHOP_DOWN" value="chop_down_if_statement_long" />
-        <option name="ITERATION_ELEMENTS_WRAPPING" value="chop_down_if_not_single" />
-      </formatting-settings>
-    </DBN-SQL>
   </code_scheme>
 </component>
\ No newline at end of file
diff --git a/linucb/views/collect_data.py b/linucb/views/collect_data.py
index 75446140487b4715dda4b9ddc2b5a5292d9d919e..a80877111ca6123a60c37ed06c85bdd7641488e4 100644
--- a/linucb/views/collect_data.py
+++ b/linucb/views/collect_data.py
@@ -87,7 +87,7 @@ class CollectData(object):
 
                         if len(tag_topic_id_list)>index:
                             for topic_id in tag_topic_id_list[index:]:
-                                if topic_id not in have_read_topic_id_list and topic_id not in recommend_topic_id_list:
+                                if topic_id not in have_read_topic_id_list and topic_id not in recommend_topic_id_list_random and topic_id not in recommend_topic_id_list:
                                     recommend_topic_id_list_random.append(topic_id)
                                     break
                     random.shuffle(recommend_topic_id_list_random)