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Open In Colab Open on GitHub AG2 offers conversable agents powered by LLM, tool or human, which can be used to perform tasks collectively via automated chat. This framework allows tool use and human participation through multi-agent conversation. Please find documentation about this feature here. RetrieveChat is a conversational system for retrieval-augmented code generation and question answering. In this notebook, we demonstrate how to utilize RetrieveChat to generate code and answer questions based on customized documentations that are not present in the LLM’s training dataset. RetrieveChat uses the AssistantAgent and RetrieveUserProxyAgent, which is similar to the usage of AssistantAgent and UserProxyAgent in other notebooks (e.g., Automated Task Solving with Code Generation, Execution & Debugging). Essentially, RetrieveUserProxyAgent implement a different auto-reply mechanism corresponding to the RetrieveChat prompts.

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Table of Contents

We’ll demonstrate six examples of using RetrieveChat for code generation and question answering:
Some extra dependencies are needed for this notebook, which can be installed via pip:
pip install autogen[retrievechat-mongodb] flaml[automl]
For more information, please refer to the installation guide.
Ensure you have a MongoDB Atlas instance with Cluster Tier >= M10. Read more on Cluster support here

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Set your API Endpoint

import os

from autogen import AssistantAgent
from autogen.agentchat.contrib.retrieve_user_proxy_agent import RetrieveUserProxyAgent

# Accepted file formats for that can be stored in
# a vector database instance
from autogen.retrieve_utils import TEXT_FORMATS

config_list = [{"model": "gpt-3.5-turbo-0125", "api_key": os.environ["OPENAI_API_KEY"], "api_type": "openai"}]
assert len(config_list) > 0
print("models to use: ", [config_list[i]["model"] for i in range(len(config_list))])
Learn more about configuring LLMs for agents here.

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Construct agents for RetrieveChat

We start by initializing the AssistantAgent and RetrieveUserProxyAgent. The system message needs to be set to “You are a helpful assistant.” for AssistantAgent. The detailed instructions are given in the user message. Later we will use the RetrieveUserProxyAgent.message_generator to combine the instructions and a retrieval augmented generation task for an initial prompt to be sent to the LLM assistant. 
print("Accepted file formats for `docs_path`:")
print(TEXT_FORMATS)

# 1. create an AssistantAgent instance named "assistant"
assistant = AssistantAgent(
    name="assistant",
    system_message="You are a helpful assistant.",
    llm_config={
        "timeout": 600,
        "cache_seed": 42,
        "config_list": config_list,
    },
)

# 2. create the RetrieveUserProxyAgent instance named "ragproxyagent"
# Refer to https://docs.ag2.ai/latest/docs/api-reference/autogen/agentchat/contrib/retrieve_user_proxy_agent/RetrieveUserProxyAgent/#autogen.agentchat.contrib.retrieve_user_proxy_agent.RetrieveUserProxyAgent
# and https://docs.ag2.ai/docs/reference/agentchat/contrib/vectordb/mongodb
# for more information on the RetrieveUserProxyAgent and MongoDBAtlasVectorDB
ragproxyagent = RetrieveUserProxyAgent(
    name="ragproxyagent",
    human_input_mode="NEVER",
    max_consecutive_auto_reply=3,
    retrieve_config={
        "task": "code",
        "docs_path": [
            "https://raw.githubusercontent.com/microsoft/FLAML/main/website/docs/Examples/Integrate%20-%20Spark.md",
            "https://raw.githubusercontent.com/microsoft/FLAML/main/website/docs/Research.md",
        ],
        "chunk_token_size": 2000,
        "model": config_list[0]["model"],
        "vector_db": "mongodb",  # MongoDB Atlas database
        "collection_name": "demo_collection",
        "db_config": {
            "connection_string": os.environ["MONGODB_URI"],  # MongoDB Atlas connection string
            "database_name": "test_db",  # MongoDB Atlas database
            "index_name": "vector_index",
            "wait_until_index_ready": 120.0,  # Setting to wait 120 seconds or until index is constructed before querying
            "wait_until_document_ready": 120.0,  # Setting to wait 120 seconds or until document is properly indexed after insertion/update
        },
        "get_or_create": True,  # set to False if you don't want to reuse an existing collection
        "overwrite": False,  # set to True if you want to overwrite an existing collection, each overwrite will force a index creation and reupload of documents
    },
    code_execution_config=False,  # set to False if you don't want to execute the code
)

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Example 1

Back to top Use RetrieveChat to help generate sample code and automatically run the code and fix errors if there is any. Problem: Which API should I use if I want to use FLAML for a classification task and I want to train the model in 30 seconds. Use spark to parallel the training. Force cancel jobs if time limit is reached. 
# reset the assistant. Always reset the assistant before starting a new conversation.
assistant.reset()

# given a problem, we use the ragproxyagent to generate a prompt to be sent to the assistant as the initial message.
# the assistant receives the message and generates a response. The response will be sent back to the ragproxyagent for processing.
# The conversation continues until the termination condition is met, in RetrieveChat, the termination condition when no human-in-loop is no code block detected.
# With human-in-loop, the conversation will continue until the user says "exit".
code_problem = "How can I use FLAML to perform a classification task and use spark to do parallel training. Train 30 seconds and force cancel jobs if time limit is reached."
chat_result = ragproxyagent.initiate_chat(assistant, message=ragproxyagent.message_generator, problem=code_problem)
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