Update app.py

app.py

@@ -140,9 +140,12 @@ qa_prompt_tmpl = (
 qa_prompt = PromptTemplate(qa_prompt_tmpl)
 """
 # setting up query engine
+cohere_rerank = CohereRerank(api_key=api_key, top_n=5)
+# setting up query engine
 query_engine = RetrieverQueryEngine(
     retriever = retriever,
-    node_postprocessors=[SimilarityPostprocessor(similarity_cutoff=0.53)],
+    #node_postprocessors=[SimilarityPostprocessor(similarity_cutoff=0.53)],
+    node_postprocessors=[SimilarityPostprocessor(similarity_cutoff=0.53), cohere_rerank],
     response_synthesizer=get_response_synthesizer(response_mode="tree_summarize",verbose=True) 
 )
 print(query_engine.get_prompts())