top k in reranker = 30, bm = 20

index_retriever.py

@@ -16,7 +16,7 @@ def create_query_engine(vector_index):
     try:
         bm25_retriever = BM25Retriever.from_defaults(
             docstore=vector_index.docstore, 
-            similarity_top_k=60  
+            similarity_top_k=20  
         )
         
         vector_retriever = VectorIndexRetriever(

utils.py

@@ -243,7 +243,7 @@ def answer_question(question, query_engine, reranker, current_model, chunks_df=N
             question,  
             retrieved_nodes, 
             reranker, 
-            top_k=20,
+            top_k=30,
             min_score_threshold=0.5, 
             diversity_penalty=0.3
         )