Update app.py

app.py

@@ -80,7 +80,7 @@ class ChatDocumentQA:
         Returns:
             List[str]: List of smaller text chunks.
         """
-        text_splitter = CharacterTextSplitter(separator="\n", chunk_size=1000, chunk_overlap=200, length_function=len)
+        text_splitter = CharacterTextSplitter(separator="\n", chunk_size=500, chunk_overlap=100, length_function=len)
 
         chunks = text_splitter.split_documents(text)
 
@@ -110,7 +110,8 @@ class ChatDocumentQA:
 
         memory = ConversationBufferMemory(memory_key="chat_history", return_messages=True)
 
-        llm = ChatOpenAI(temperature=0)
+        # llm = ChatOpenAI(temperature=0)
+        llm=OpenAI(temperature=0)
 
         return ConversationalRetrievalChain.from_llm(llm=llm, retriever=vectorstore.as_retriever(),
                                                      condense_question_prompt=CONDENSE_QUESTION_PROMPT,