Self-Contained adapters Library

This branch disentangles adapter-transformers from HF Transformers and adds Transformers as an external dependency.

Breaking changes

• All adapter-related classes now have to imported via adapters namespace, e.g.:

  from adapters import BertAdapterModel
  # ...
  

• Built-in HF model classes can be adapted for usage with adapters via a wrapper method, e.g.:

  import adapters
  from transformers import BertModel
  
  model = BertModel.from_pretrained("bert-base-uncased")
  adapters.init(model)
  

Model support

• Albert
• Bart
• BEiT
• Bert
• Bert Generation
• CLIP
• Deberta
• Deberta V2
• DistilBert
• Encoder-Decoder
• GPT-2
• GPT-J
• MBart
• Roberta
• T5
• ViT
• XLM-R

TODO

Features not (yet) working:

• Loading model + adapter checkpoints using HF classes
• Text generation with adapters (hacked working version)
• Parallel generation with adapters
• Using Transformers pipelines with adapters
• Using HF language modeling classes with invertible adapters

Tasks to do for first usable version:

• Remove utils folder and use utils of HF
• Make all tests passing
• Update example scripts w. breaking changes
• Update docs w. breaking changes
• Update contributing guides for new code structure

adapters

A friendly fork of HuggingFace's Transformers, adding Adapters to PyTorch language models

adapters is an extension of HuggingFace's Transformers library, integrating adapters into state-of-the-art language models by incorporating AdapterHub, a central repository for pre-trained adapter modules.

💡 Important: This library can be used as a drop-in replacement for HuggingFace Transformers and regularly synchronizes new upstream changes. Thus, most files in this repository are direct copies from the HuggingFace Transformers source, modified only with changes required for the adapter implementations.

Installation

adapters currently supports Python 3.7+ and PyTorch 1.3.1+. After installing PyTorch, you can install adapters from PyPI ...

pip install -U adapters

... or from source by cloning the repository:

git clone https://github.com/adapter-hub/adapters.git
cd adapters
pip install .

Getting Started

HuggingFace's great documentation on getting started with Transformers can be found here. adapters is fully compatible with Transformers.

To get started with adapters, refer to these locations:

• Colab notebook tutorials, a series notebooks providing an introduction to all the main concepts of (adapter-)transformers and AdapterHub
• https://docs.adapterhub.ml, our documentation on training and using adapters with adapters
• https://adapterhub.ml to explore available pre-trained adapter modules and share your own adapters
• Examples folder of this repository containing HuggingFace's example training scripts, many adapted for training adapters

Implemented Methods

Currently, adapters integrates all architectures and methods listed below:

Supported Models

We currently support the PyTorch versions of all models listed on the Model Overview page in our documentation.

Citation

If you use this library for your work, please consider citing our paper AdapterHub: A Framework for Adapting Transformers:

@inproceedings{pfeiffer2020AdapterHub,
    title={AdapterHub: A Framework for Adapting Transformers},
    author={Pfeiffer, Jonas and
            R{\"u}ckl{\'e}, Andreas and
            Poth, Clifton and
            Kamath, Aishwarya and
            Vuli{\'c}, Ivan and
            Ruder, Sebastian and
            Cho, Kyunghyun and
            Gurevych, Iryna},
    booktitle={Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing: System Demonstrations},
    pages={46--54},
    year={2020}
}