ColossalAI/applications/ColossalQA/examples/webui_demo/README.md

ColossalQA WebUI Demo

This demo provides a simple WebUI for ColossalQA, enabling you to upload your files as a knowledge base and interact with them through a chat interface in your browser.

The server.py initializes the backend RAG chain that can be backed by various language models (e.g., ChatGPT, Huawei Pangu, ChatGLM2). Meanwhile, webui.py launches a Gradio-supported chatbot interface.

Usage

Installation

First, install the necessary dependencies for ColossalQA:

git clone https://github.com/hpcaitech/ColossalAI.git
cd ColossalAI/applications/ColossalQA/
pip install -e .

Install the dependencies for ColossalQA webui demo:

pip install -r requirements.txt

Configure the RAG Chain

Customize the RAG Chain settings, such as the embedding model (default: moka-ai/m3e), the language model, and the prompts, in the config.py. Please refer to Prepare configuration file for the details of config.py.

For API-based language models (like ChatGPT or Huawei Pangu), provide your API key for authentication. For locally-run models, indicate the path to the model's checkpoint file.

Prepare configuration file

All configs are defined in ColossalQA/examples/webui_demo/config.py. You can primarily modify the bolded sections in the config to switch the embedding model and the large model loaded by the backend. Other parameters can be left as default or adjusted based on your specific requirements.

• embed:
  • embed_name: the embedding model name
  • embed_model_name_or_path: path to embedding model, could be a local path or a huggingface path
  • embed_model_device: device to load the embedding model
• model:
  • mode: "local" for loading models, "api" for using model api
  • model_name: "chatgpt_api", "pangu_api", or your local model name
  • model_path: path to the model, could be a local path or a huggingface path. don't need if mode="api"
  • device: device to load the LLM
• splitter:
  • name: text splitter class name, the class should be imported at the beginning of config.py
• retrieval:
  • retri_top_k: number of retrieval text which will be provided to the model
  • retri_kb_file_path: path to store database files
  • verbose: Boolean type, to control the level of detail in program output
• chain:
  • mem_summary_prompt: summary prompt template
  • mem_human_prefix: human prefix for prompt
  • mem_ai_prefix: AI assistant prefix for prompt
  • mem_max_tokens: max tokens for history information
  • mem_llm_kwargs: model's generation kwargs for summarizing history
    • max_new_tokens: int
    • temperature: int
    • do_sample: bool
  • disambig_prompt: disambiguate prompt template
  • disambig_llm_kwargs: model's generation kwargs for disambiguating user's input
    • max_new_tokens: int
    • temperature: int
    • do_sample: bool
  • gen_llm_kwargs: model's generation kwargs
    • max_new_tokens: int
    • temperature: int
    • do_sample: bool
  • gen_qa_prompt: generation prompt template
  • verbose: Boolean type, to control the level of detail in program output

Run WebUI Demo

Execute the following command to start the demo:

1. If you want to use a local model as the backend model, you need to specify the model name and model path in config.py and run the following commands.

export TMP="path/to/store/tmp/files"
# start the backend server
python server.py --http_host "host" --http_port "port"

# in an another terminal, start the ui
python webui.py --http_host "your-backend-api-host" --http_port "your-backend-api-port"

2. If you want to use chatgpt api as the backend model, you need to change the model mode to "api", change the model name to "chatgpt_api" in config.py, and run the following commands.

export TMP="path/to/store/tmp/files"

# Auth info for OpenAI API
export OPENAI_API_KEY="YOUR_OPENAI_API_KEY"

# start the backend server
python server.py --http_host "host" --http_port "port"

# in an another terminal, start the ui
python webui.py --http_host "your-backend-api-host" --http_port "your-backend-api-port"

3. If you want to use pangu api as the backend model, you need to change the model mode to "api", change the model name to "pangu_api" in config.py, and run the following commands.

export TMP="path/to/store/tmp/files"

# Auth info for Pangu API
export URL=""
export USERNAME=""
export PASSWORD=""
export DOMAIN_NAME=""

# start the backend server
python server.py --http_host "host" --http_port "port"

# in an another terminal, start the ui
python webui.py --http_host "your-backend-api-host" --http_port "your-backend-api-port"

After launching the script, you can upload files and engage with the chatbot through your web browser.