AdapterHub: A Framework for Adapting Transformers

• URL: http://arxiv.org/abs/2007.07779v3
• Date: Tue, 6 Oct 2020 10:16:39 GMT
• Title: AdapterHub: A Framework for Adapting Transformers
• Authors: Jonas Pfeiffer, Andreas R\"uckl\'e, Clifton Poth, Aishwarya Kamath, Ivan Vuli\'c, Sebastian Ruder, Kyunghyun Cho, Iryna Gurevych
• Abstract summary: AdapterHub is a framework that allows dynamic "stitching-in" of pre-trained adapters for different tasks and languages. Our framework enables scalable and easy access to sharing of task-specific models.
• Score: 148.6877231725939
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The current modus operandi in NLP involves downloading and fine-tuning pre-trained models consisting of millions or billions of parameters. Storing and sharing such large trained models is expensive, slow, and time-consuming, which impedes progress towards more general and versatile NLP methods that learn from and for many tasks. Adapters -- small learnt bottleneck layers inserted within each layer of a pre-trained model -- ameliorate this issue by avoiding full fine-tuning of the entire model. However, sharing and integrating adapter layers is not straightforward. We propose AdapterHub, a framework that allows dynamic "stitching-in" of pre-trained adapters for different tasks and languages. The framework, built on top of the popular HuggingFace Transformers library, enables extremely easy and quick adaptations of state-of-the-art pre-trained models (e.g., BERT, RoBERTa, XLM-R) across tasks and languages. Downloading, sharing, and training adapters is as seamless as possible using minimal changes to the training scripts and a specialized infrastructure. Our framework enables scalable and easy access to sharing of task-specific models, particularly in low-resource scenarios. AdapterHub includes all recent adapter architectures and can be found at https://AdapterHub.ml.

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