Update advanced_rag_project/src/ingestion.py

advanced_rag_project/src/ingestion.py

@@ -4,6 +4,9 @@ from langchain_text_splitters import RecursiveCharacterTextSplitter
 from langchain_google_genai import GoogleGenerativeAIEmbeddings
 from langchain_community.vectorstores import Chroma
 from langchain_core.documents import Document
+from langchain.retrievers.multi_query import MultiQueryRetriever
+from langchain.retrievers import ContextualCompressionRetriever
+from langchain.retrievers.document_compressors import CrossEncoderReranker
 from langchain_core.embeddings import Embeddings
 from google import genai
 from google.genai import types