Update baidu-ultr_baidu-mlm-ctr.py

baidu-ultr_baidu-mlm-ctr.py

@@ -261,9 +261,11 @@ class BaiduUltrBuilder(datasets.GeneratorBasedBuilder):
         aggregated per query. E.g., click, position, query_document_embeddings, etc.
         :return:
         """
+        
         for file in files:
             df = pd.read_feather(file)
             current_query_id = None
+            query_no = 0
             sample_key = None
             sample = None
 
@@ -271,11 +273,14 @@ class BaiduUltrBuilder(datasets.GeneratorBasedBuilder):
                 row = df.iloc[i]
 
                 if current_query_id != row["query_id"]:
+                    query_no += 1
+                    
                     if current_query_id is not None:
                         yield sample_key, sample
 
                     current_query_id = row["query_id"]
-                    sample_key = f"{file}-{current_query_id}"
+                    # Use the query number in sample_key as query_ids are not unique.
+                    sample_key = f"{file}-{query_no}"
                     sample = {"n": 0}
 
                     for column in query_columns: