updated parameters

app.py

@@ -74,7 +74,7 @@ if uploaded_files:
         faiss_retriever = vector_store.as_retriever(search_kwargs={"k": 5})
         ensemble_retriever = EnsembleRetriever(
             retrievers=[bm25_retriever, faiss_retriever],
-            weights=[0.4, 0.6]
+            weights=[0.5, 0.5]
         )
 
         # Re-ranking Model
@@ -99,8 +99,11 @@ if uploaded_files:
             max_new_tokens=1024,
             temperature=0.3,
             top_p=0.95,
+            do_sample=True,
             repetition_penalty=1.15,
-            return_full_text=False  # Important for response formatting
+            return_full_text=False,  # Important for response formatting
+            eos_token_id=tokenizer.eos_token_id,
+            pad_token_id=tokenizer.pad_token_id
         )
         
         llm = HuggingFacePipeline(pipeline=pipeline_llm)