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https://github.com/hwchase17/langchain
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Add example for question answering over documents with OpenAI Function Agent (#6448)
This PR adds an example of doing question answering over documents using OpenAI Function Agents. #### Who can review? @hwchase17 --------- Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
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Ismail Pelaseyed
GitHub
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"cells": [
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{
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"cell_type": "markdown",
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"id": "ec1d7a9a",
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"metadata": {},
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"source": [
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"# Document Comparison\n",
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"\n",
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"This notebook shows how to use an agent to compare two documents.\n",
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"\n",
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"The high level idea is we will create a question-answering chain for each document, and then use that "
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"cell_type": "code",
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"execution_count": 1,
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"id": "8632a37c",
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"metadata": {},
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"outputs": [
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"/Users/harrisonchase/.pyenv/versions/3.9.1/envs/langchain/lib/python3.9/site-packages/deeplake/util/check_latest_version.py:32: UserWarning: A newer version of deeplake (3.6.4) is available. It's recommended that you update to the latest version using `pip install -U deeplake`.\n",
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" warnings.warn(\n"
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]
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}
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],
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"source": [
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"from pydantic import BaseModel, Field\n",
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"\n",
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"from langchain.chat_models import ChatOpenAI\n",
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"from langchain.agents import Tool\n",
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"from langchain.embeddings.openai import OpenAIEmbeddings\n",
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"from langchain.text_splitter import CharacterTextSplitter\n",
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"from langchain.vectorstores import FAISS\n",
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"from langchain.document_loaders import PyPDFLoader\n",
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"from langchain.chains import RetrievalQA"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"id": "64f19917",
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"metadata": {},
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"outputs": [],
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"source": [
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"class DocumentInput(BaseModel):\n",
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" question: str = Field()\n",
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"\n",
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"\n",
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"llm = ChatOpenAI(temperature=0, model=\"gpt-3.5-turbo-0613\")\n",
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"\n",
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"tools = []\n",
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"files = [\n",
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" # https://abc.xyz/investor/static/pdf/2023Q1_alphabet_earnings_release.pdf\n",
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" {\n",
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" \"name\": \"alphabet-earnings\", \n",
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" \"path\": \"/Users/harrisonchase/Downloads/2023Q1_alphabet_earnings_release.pdf\",\n",
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" }, \n",
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" # https://digitalassets.tesla.com/tesla-contents/image/upload/IR/TSLA-Q1-2023-Update\n",
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" {\n",
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" \"name\": \"tesla-earnings\", \n",
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" \"path\": \"/Users/harrisonchase/Downloads/TSLA-Q1-2023-Update.pdf\"\n",
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" }\n",
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"]\n",
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"\n",
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"for file in files:\n",
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" loader = PyPDFLoader(file[\"path\"])\n",
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" pages = loader.load_and_split()\n",
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" text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)\n",
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" docs = text_splitter.split_documents(pages)\n",
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" embeddings = OpenAIEmbeddings()\n",
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" retriever = FAISS.from_documents(docs, embeddings).as_retriever()\n",
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" \n",
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" # Wrap retrievers in a Tool\n",
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" tools.append(\n",
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" Tool(\n",
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" args_schema=DocumentInput,\n",
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" name=file[\"name\"], \n",
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" description=f\"useful when you want to answer questions about {file['name']}\",\n",
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" func=RetrievalQA.from_chain_type(llm=llm, retriever=retriever)\n",
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" )\n",
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" )"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"id": "eca02549",
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"metadata": {},
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"outputs": [],
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"source": [
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"from langchain.agents import initialize_agent\n",
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"from langchain.agents import AgentType"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"id": "c4d56c25",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"\n",
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"\n",
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"\u001b[1m> Entering new chain...\u001b[0m\n",
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"\u001b[32;1m\u001b[1;3m\n",
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"Invoking: `alphabet-earnings` with `{'question': 'revenue'}`\n",
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"\n",
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"\n",
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"\u001b[0m\u001b[36;1m\u001b[1;3m{'query': 'revenue', 'result': 'The revenue for Alphabet Inc. in the first quarter of 2023 was $69,787 million.'}\u001b[0m\u001b[32;1m\u001b[1;3m\n",
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"Invoking: `tesla-earnings` with `{'question': 'revenue'}`\n",
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"\n",
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"\n",
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"\u001b[0m\u001b[33;1m\u001b[1;3m{'query': 'revenue', 'result': 'Total revenue for Q1-2023 was $23.3 billion.'}\u001b[0m\u001b[32;1m\u001b[1;3mAlphabet Inc. had more revenue than Tesla. In the first quarter of 2023, Alphabet Inc. had a revenue of $69,787 million, while Tesla had a revenue of $23.3 billion.\u001b[0m\n",
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"\n",
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"\u001b[1m> Finished chain.\u001b[0m\n"
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]
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},
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{
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"data": {
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"text/plain": [
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"{'input': 'did alphabet or tesla have more revenue?',\n",
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" 'output': 'Alphabet Inc. had more revenue than Tesla. In the first quarter of 2023, Alphabet Inc. had a revenue of $69,787 million, while Tesla had a revenue of $23.3 billion.'}"
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]
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},
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"execution_count": 4,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"llm = ChatOpenAI(\n",
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" temperature=0,\n",
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" model=\"gpt-3.5-turbo-0613\", \n",
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")\n",
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"\n",
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"agent = initialize_agent(\n",
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" agent=AgentType.OPENAI_FUNCTIONS,\n",
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" tools=tools,\n",
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" llm=llm,\n",
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" verbose=True,\n",
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")\n",
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"\n",
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"agent({\"input\": \"did alphabet or tesla have more revenue?\"})"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "6db4c853",
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.9.1"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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