Self-slimmed Vision Transformer (ECCV2022)

This repo is the official implementation of "Self-slimmed Vision Transformer".

Updates

07/20/2022

[Initial commits]:

The supported code and models for LV-ViT are provided.

Introduction

SiT (Self-slimmed Vision Transformer) is introduce in arxiv and serves as a generic self-slimmed learning method for vanilla vision transformers. Our concise TSM (Token Slimming Module) softly integrates redundant tokens into fewer informative ones. For stable and efficient training, we introduce a novel FRD framework to leverage structure knowledge, which can densely transfer token information in a flexible auto-encoder manner.

Our SiT can speed up ViTs by 1.7x with negligible accuracy drop, and even speed up ViTs by 3.6x while maintaining 97% of their performance. Surprisingly, by simply arming LV-ViT with our SiT, we achieve new state-of-the-art performance on ImageNet, surpassing all the recent CNNs and ViTs.

Main results on LV-ViT

We follow the settings of LeViT for inference speed evaluation.

Model	Teacher	Resolution	Top-1	#Param.	FLOPs	Ckpt	Shell
SiT-T	LV-ViT-T	224x224	80.1	15.9M	1.0G	google	train.sh
SiT-XS	LV-ViT-S	224x224	81.2	25.6M	1.5G	google	train.sh
SiT-S	LV-ViT-S	224x224	83.1	25.6M	4.0G	google	train.sh
SiT-M	LV-ViT-M	224x224	84.2	55.6M	8.1G	google	train.sh
SiT-L	LV-ViT-L	288x288	85.6	148.2M	34.4G	google	train.sh

The LV-ViT teacher models are trained with token-labeling and their checkpoints are provided.

Model	Resolution	Top-1	#Param.	FLOPs	Ckpt
LV-ViT-T	224x224	81.8	15.7M	3.5G	google
LV-ViT-S	224x224	83.1	25.4M	5.5G	google
LV-ViT-M	224x224	84.0	55.2M	11.9G	google
LV-ViT-L	288x288	85.3	147M	56.1G	google

Cite SiT

If you find this repository useful, please use the following BibTeX entry for citation.

@misc{zong2021self,
      title={Self-slimmed Vision Transformer}, 
      author={Zhuofan Zong and Kunchang Li and Guanglu Song and Yali Wang and Yu Qiao and Biao Leng and Yu Liu},
      year={2021},
      eprint={2111.12624},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}

License

This project is released under the MIT license. Please see the LICENSE file for more information.