OpenDelta - An Open-Source Framework for Paramter Efficient Tuning

An Open-Source Framework for Paramter Efficient Tuning.

Overview • Installation • Basic Usage • Docs • Performance •

Overview

OpenDelta is a toolkit for parameter efficient methods (we dub it as delta tuning), by which users could flexibly assign (or add) a small amount parameters to update while keeping the most paramters frozen. By using OpenDelta, users could easily implement prefix-tuning, adapters, Lora, or any other types of delta tuning with preferred PTMs.

Our repo is tested on Python 3.8 and PyTorch 1.9.0. Lower version may also be supported.

A demo of using Opendelta to modify the PLM (E.g., BART).

Installation

create a virtualenv (optional)

conda create -n opendelta_env python=3.8
conda activate opendelta_env

Using Pip

Install OpenDelta using pip as follows:

pip install opendelta

To play with the latest features, you can also install OpenDelta from the source.

Build from Source

git clone https://github.com/thunlp/OpenDelta.git
cd OpenDelta

Option 1: If you won't modify the code, run

python setup.py install

Option 2:  If you want to modify the code, run

python setup.py develop

Must Try

from transformers import AutoModelForSeq2SeqLM
t5 = AutoModelForSeq2SeqLM.from_pretrained("t5-base")
from opendelta import AutoDeltaModel
delta = AutoDeltaModel.from_finetuned("DeltaHub/lora_t5-base_mrpc", backbone_model=t5)
delta.log()

Verified Supported Models

You can try to use OpenDelta on any backbone models based on PyTorch.

However, with small chances thatThe interface of the submodules of the backbone model is not supported. Therefore we verified some commonly
used models that OpenDelta are sure to support.

We will keep testing more and more emerging models.

Pull requests are welcomed when you successfully apply OpenDelta on your own backbone model.

Performance Checked Combination

Google sheet here

Subject to change at any moment.

GitHub - thunlp/OpenDelta at pythonawesome.com

A plug-and-play library for parameter-efficient-tuning (Delta-tuning) - GitHub - thunlp/OpenDelta at pythonawesome.com

GitHubthunlp