Retrieval PDF PDF 문서 embedding - vectorize db와 비교 - similar score - retreival document (1) Pagkage Import from langchain.vectorstores import Chroma from langchain.text_splitter import RecursiveCharacterTextSplitter from langchain.llms import OpenAI from langchain.chains import RetrievalQA from langchain.document_loaders import TextLoader from langchain.document_loaders import PyPDFLoader from la..