new top k 30

index_retriever.py

@@ -22,12 +22,12 @@ def create_query_engine(vector_index):
         vector_retriever = VectorIndexRetriever(
             index=vector_index, 
             similarity_top_k=30,
-            similarity_cutoff=0.8
+            similarity_cutoff=0.85
         )
         
         hybrid_retriever = QueryFusionRetriever(
             [vector_retriever, bm25_retriever],
-            similarity_top_k=30,
+            similarity_top_k=15,
             num_queries=1
         )