Update app.py

app.py

@@ -1,11 +1,27 @@
 import gradio as gr
 from huggingface_hub import InferenceClient
+from langchain_core.vectorstores import InMemoryVectorStore
+from langchain.chains import RetrievalQA
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_groq import ChatGroq
+
 
 """
 For more information on `huggingface_hub` Inference API support, please check the docs: https://huggingface.co/docs/huggingface_hub/v0.22.2/en/guides/inference
 """
 client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 
+model_name = "llama-3.3-70b-versatile"
+groq_api_key = "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"
+groq_chat = ChatGroq(groq_api_key=groq_api_key, model_name=model_name)
+embeddings = HuggingFaceEmbeddings(
+    model_name = "pkshatech/GLuCoSE-base-ja"
+)
+vector_store = InMemoryVectorStore.load(
+    "/content/sample_data/kinousei_vector_store", embeddings
+)
+retriever = vector_store.as_retriever(search_kwargs={"k": 4})
+
 
 def fetch_response(user_input):
   chat = ChatGroq(