Update app.py

app.py

@@ -26,7 +26,7 @@ pdfs_directory = '../pdfs'
 os.makedirs(pdfs_directory, exist_ok=True)
 
 # Initialize the embedding model
-embedding = OpenAIEmbeddings()
+embedding = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")  # You can choose any model from Hugging Face
 
 # Initialize the vector store for document indexing
 vector_store = InMemoryVectorStore(embedding=embedding)