■ ContextualCompressionRetriever 클래스의 생성자에서 base_compressor/base_retriever 인자를 사용해 ContextualCompressionRetriever 객체를 만드는 방법을 보여준다.
※ OPENAI_API_KEY 환경 변수 값은 .env 파일에 정의한다.
▶ main.py
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from dotenv import load_dotenv from langchain_community.document_loaders import TextLoader from langchain_text_splitters import CharacterTextSplitter from langchain_openai import OpenAIEmbeddings from langchain_community.vectorstores import FAISS from langchain_openai import OpenAI from langchain.retrievers.document_compressors import LLMChainExtractor from langchain.retrievers import ContextualCompressionRetriever load_dotenv() def printDocumentList(documentList): print(f"\n{'-' * 100}\n".join([f"Document {index + 1}:\n\n" + document.page_content for index, document in enumerate(documentList)])) textLoader = TextLoader("state_of_the_union.txt") documentList = textLoader.load() characterTextSplitter = CharacterTextSplitter(chunk_size = 1000, chunk_overlap = 0) splitDocumentList = characterTextSplitter.split_documents(documentList) openAIEmbeddings = OpenAIEmbeddings() faiss = FAISS.from_documents(splitDocumentList, openAIEmbeddings) vectorStoreRetriever = faiss.as_retriever() openAI = OpenAI(temperature = 0) llmChainExtractor = LLMChainExtractor.from_llm(openAI) contextualCompressionRetriever = ContextualCompressionRetriever(base_compressor = llmChainExtractor, base_retriever = vectorStoreRetriever) |
▶ requirements.txt
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aiohappyeyeballs==2.3.6 aiohttp==3.10.3 aiosignal==1.3.1 annotated-types==0.7.0 anyio==4.4.0 async-timeout==4.0.3 attrs==24.2.0 certifi==2024.7.4 charset-normalizer==3.3.2 dataclasses-json==0.6.7 distro==1.9.0 exceptiongroup==1.2.2 faiss-gpu==1.7.2 frozenlist==1.4.1 greenlet==3.0.3 h11==0.14.0 httpcore==1.0.5 httpx==0.27.0 idna==3.7 jiter==0.5.0 jsonpatch==1.33 jsonpointer==3.0.0 langchain==0.2.14 langchain-community==0.2.12 langchain-core==0.2.33 langchain-openai==0.1.22 langchain-text-splitters==0.2.2 langsmith==0.1.99 marshmallow==3.21.3 multidict==6.0.5 mypy-extensions==1.0.0 numpy==1.26.4 openai==1.41.0 orjson==3.10.7 packaging==24.1 pydantic==2.8.2 pydantic_core==2.20.1 python-dotenv==1.0.1 PyYAML==6.0.2 regex==2024.7.24 requests==2.32.3 sniffio==1.3.1 SQLAlchemy==2.0.32 tenacity==8.5.0 tiktoken==0.7.0 tqdm==4.66.5 typing-inspect==0.9.0 typing_extensions==4.12.2 urllib3==2.2.2 yarl==1.9.4 |
※ pip install python-dotenv langchain-community langchain-openai faiss-gpu 명령을 실행했다.
