adding chatbot

app.py

@@ -26,7 +26,7 @@ def get_openai_chat_model(API_key):
     llm = OpenAI()
     return llm
 
-def process_documents(documents,data_chunk=2000,chunk_overlap=50):
+def process_documents(documents,data_chunk=1500,chunk_overlap=100):
     text_splitter = CharacterTextSplitter(chunk_size=data_chunk, chunk_overlap=chunk_overlap,separator='\n')
     texts = text_splitter.split_documents(documents)
     return texts
@@ -34,7 +34,7 @@ def process_documents(documents,data_chunk=2000,chunk_overlap=50):
 def get_hugging_face_model(model_id,API_key,temperature=0.1):
     chat_llm = HuggingFaceHub(huggingfacehub_api_token=API_key,
                                       repo_id=model_id,
-                                      model_kwargs={"temperature": temperature, "max_new_tokens": 2048})
+                                      model_kwargs={"temperature": temperature, "max_new_tokens": 4096})
     return chat_llm
 
 def chat_application(llm_service,key):