Update app.py

app.py

@@ -31,14 +31,14 @@ def get_text_chunks(text):
 
 def get_vectorstore(text_chunks):
     #embeddings = OpenAIEmbeddings()
-    embeddings = HuggingFaceInstructEmbeddings(model_name="hkunlp/instructor-xl")
+    embeddings = HuggingFaceBgeEmbeddings(model_name="BAAI/bge-small-en-v1.5")
     vectorstore = FAISS.from_texts(texts=text_chunks, embedding=embeddings)
     return vectorstore
 
 
 def get_conversation_chain(vectorstore):
     #llm = ChatOpenAI()
-    llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", model_kwargs={"temperature":0.5, "max_length":512})
+    llm = HuggingFaceHub(repo_id="deepset/roberta-base-squad2", model_kwargs={"temperature":0.5, "max_length":512})
 
     memory = ConversationBufferMemory(
         memory_key='chat_history', return_messages=True)