Update app.py

app.py

@@ -97,7 +97,7 @@ retriever = EmbeddingRetriever(
 )
 
 # Initialize the PromptNode
-pn = PromptNode(model_name_or_path=model_name, default_prompt_template=template, api_key=openai_key, max_length=700)
+pn = PromptNode(model_name_or_path=model_name, default_prompt_template=template, api_key=openai_key, max_length=700, model_kwargs={"generation_kwargs": {"do_sample": True, "temperature": 0}})
 
 # Initialize the pipeline
 pipe = Pipeline()