■ MultiQueryRetriever 클래스의 invoke 메소드를 사용하는 방법을 보여준다. 2
※ OPENAI_API_KEY 환경 변수 값은 .env 파일에 정의한다.
▶ main.py
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from dotenv import load_dotenv from typing import List from langchain_community.document_loaders import WebBaseLoader from langchain_text_splitters import RecursiveCharacterTextSplitter from langchain_openai import OpenAIEmbeddings from langchain_chroma import Chroma from langchain_core.prompts import PromptTemplate from langchain_openai import ChatOpenAI from langchain_core.output_parsers import BaseOutputParser from langchain.retrievers.multi_query import MultiQueryRetriever load_dotenv() webBaseLoader = WebBaseLoader("https://lilianweng.github.io/posts/2023-06-23-agent/") documentList = webBaseLoader.load() recursiveCharacterTextSplitter = RecursiveCharacterTextSplitter(chunk_size = 500, chunk_overlap = 0) splitdocumentList = recursiveCharacterTextSplitter.split_documents(documentList) openAIEmbeddings = OpenAIEmbeddings() chroma = Chroma.from_documents(documents = splitdocumentList, embedding = openAIEmbeddings) promptTemplate = PromptTemplate( input_variables = ["question"], template = """You are an AI language model assistant. Your task is to generate five different versions of the given user question to retrieve relevant documents from a vector database. By generating multiple perspectives on the user question, your goal is to help the user overcome some of the limitations of the distance-based similarity search. Provide these alternative questions separated by newlines. Original question : {question}""" ) chatOpenAI = ChatOpenAI(temperature = 0) class LineListOutputParser(BaseOutputParser[List[str]]): """Output parser for a list of lines.""" def parse(self, text : str) -> List[str]: lineList = text.strip().split("\n") return list(filter(None, lineList)) lineListOutputParser = LineListOutputParser() runnableSequence = promptTemplate | chatOpenAI | lineListOutputParser rultiQueryRetriever = MultiQueryRetriever(retriever = chroma.as_retriever(), llm_chain = runnableSequence, parser_key = "lines") responseDocumentList = rultiQueryRetriever.invoke("What does the course say about regression?") print(len(responseDocumentList)) |
▶ requirements.txt
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aiohappyeyeballs==2.3.5 aiohttp==3.10.3 aiosignal==1.3.1 annotated-types==0.7.0 anyio==4.4.0 asgiref==3.8.1 async-timeout==4.0.3 attrs==24.2.0 backoff==2.2.1 bcrypt==4.2.0 beautifulsoup4==4.12.3 bs4==0.0.2 build==1.2.1 cachetools==5.4.0 certifi==2024.7.4 charset-normalizer==3.3.2 chroma-hnswlib==0.7.6 chromadb==0.5.5 click==8.1.7 coloredlogs==15.0.1 dataclasses-json==0.6.7 Deprecated==1.2.14 distro==1.9.0 exceptiongroup==1.2.2 fastapi==0.112.0 filelock==3.15.4 flatbuffers==24.3.25 frozenlist==1.4.1 fsspec==2024.6.1 google-auth==2.33.0 googleapis-common-protos==1.63.2 greenlet==3.0.3 grpcio==1.65.4 h11==0.14.0 httpcore==1.0.5 httptools==0.6.1 httpx==0.27.0 huggingface-hub==0.24.5 humanfriendly==10.0 idna==3.7 importlib_metadata==8.0.0 importlib_resources==6.4.0 jiter==0.5.0 jsonpatch==1.33 jsonpointer==3.0.0 kubernetes==30.1.0 langchain==0.2.12 langchain-chroma==0.1.2 langchain-community==0.2.11 langchain-core==0.2.29 langchain-openai==0.1.21 langchain-text-splitters==0.2.2 langsmith==0.1.98 markdown-it-py==3.0.0 marshmallow==3.21.3 mdurl==0.1.2 mmh3==4.1.0 monotonic==1.6 mpmath==1.3.0 multidict==6.0.5 mypy-extensions==1.0.0 numpy==1.26.4 oauthlib==3.2.2 onnxruntime==1.18.1 openai==1.40.3 opentelemetry-api==1.26.0 opentelemetry-exporter-otlp-proto-common==1.26.0 opentelemetry-exporter-otlp-proto-grpc==1.26.0 opentelemetry-instrumentation==0.47b0 opentelemetry-instrumentation-asgi==0.47b0 opentelemetry-instrumentation-fastapi==0.47b0 opentelemetry-proto==1.26.0 opentelemetry-sdk==1.26.0 opentelemetry-semantic-conventions==0.47b0 opentelemetry-util-http==0.47b0 orjson==3.10.7 overrides==7.7.0 packaging==24.1 posthog==3.5.0 protobuf==4.25.4 pyasn1==0.6.0 pyasn1_modules==0.4.0 pydantic==2.8.2 pydantic_core==2.20.1 Pygments==2.18.0 PyPika==0.48.9 pyproject_hooks==1.1.0 python-dateutil==2.9.0.post0 python-dotenv==1.0.1 PyYAML==6.0.2 regex==2024.7.24 requests==2.32.3 requests-oauthlib==2.0.0 rich==13.7.1 rsa==4.9 shellingham==1.5.4 six==1.16.0 sniffio==1.3.1 soupsieve==2.5 SQLAlchemy==2.0.32 starlette==0.37.2 sympy==1.13.1 tenacity==8.5.0 tiktoken==0.7.0 tokenizers==0.20.0 tomli==2.0.1 tqdm==4.66.5 typer==0.12.3 typing-inspect==0.9.0 typing_extensions==4.12.2 urllib3==2.2.2 uvicorn==0.30.5 uvloop==0.19.0 watchfiles==0.23.0 websocket-client==1.8.0 websockets==12.0 wrapt==1.16.0 yarl==1.9.4 zipp==3.19.2 |
※ pip install python-dotenv langchain-community langchain-openai langchain-chroma bs4 명령을 실행했다.