metadata
license: mit
We released all of our checkpoints used in LoRA-Flow which has been accepted to ACL 2024 main conference.
Summary
In this repo, we release LoRA and the gate of 7B models trained in our paper in HuggingFace format.
Introduction
The following picture has shown our proposed method, we use layer-wise fusion gates to facilitate dynamic LoRA fusion, which project input hidden states of each layer into fusion weights.
Citation
if you find our repo is helpful, please cite the following
@inproceedings{wang-etal-2024-lora-flow,
title = "LoRA-Flow: Dynamic LoRA Fusion for Large Language Models in Generative Tasks",
author = "Wang, Hanqing and
Ping, Bowen and
Wang, Shuo and
Han, Xu and
Chen, Yun and
Liu, Zhiyuan and
Sun, Maosong",
editor = "Ku, Lun-Wei and
Martins, Andre and
Srikumar, Vivek",
booktitle = "Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
month = aug,
year = "2024",
address = "Bangkok, Thailand",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2024.acl-long.695",
doi = "10.18653/v1/2024.acl-long.695",
pages = "12871--12882",
abstract = "LoRA employs lightweight modules to customize large language models (LLMs) for each downstream task or domain, where different learned additional modules represent diverse skills. Combining existing LoRAs to address new tasks can enhance the reusability of learned LoRAs, particularly beneficial for tasks with limited annotated data. Most prior works on LoRA combination primarily rely on task-level weights for each involved LoRA, making different examples and tokens share the same LoRA weights. However, in generative tasks, different tokens may necessitate diverse skills to manage. Taking the Chinese math task as an example, understanding the problem description may depend more on the Chinese LoRA, while the calculation part may rely more on the math LoRA. To this end, we propose LoRA-Flow, which utilizes dynamic weights to adjust the impact of different LoRAs. The weights at each step are determined by a fusion gate with extremely few parameters, which can be learned with only 200 training examples. Experiments across six generative tasks demonstrate that our method consistently outperforms baselines with task-level fusion weights. This underscores the necessity of introducing dynamic fusion weights for LoRA combination.",
}