Faster Vision Mamba is Rebuilt in Minutes via Merged Token Re-training

Mingjia Shi; Yuhao Zhou; Ruiji Yu; Zekai Li; Zhiyuan Liang; Xuanlei Zhao; Xiaojiang Peng; Shanmukha Ramakrishna Vedantam; Wangbo Zhao; Kai Wang; Yang You

arXiv · 2412.12496

Faster Vision Mamba is Rebuilt in Minutes via Merged Token Re-training

Mingjia Shi·Yuhao Zhou·Ruiji Yu·Zekai Li·Zhiyuan Liang·Xuanlei Zhao·Xiaojiang Peng·Shanmukha Ramakrishna Vedantam·Wangbo Zhao·Kai Wang·Yang You

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Abstract

Vision Mamba has shown close to state of the art performance on computer vision tasks, drawing much interest in increasing it's efficiency. A promising approach is token reduction (that has been successfully implemented in ViTs). Pruning informative tokens in Mamba leads to a high loss of key knowledge and degraded performance. An alternative, of merging tokens preserves more information than pruning, also suffers for large compression ratios. Our key insight is that a quick round of retraining after token merging yeilds robust results across various compression ratios. Empirically, pruned Vims only drop up to 0.9% accuracy on ImageNet-1K, recovered by our proposed framework R-MeeTo in our main evaluation. We show how simple and effective the fast recovery can be achieved at minute-level, in particular, a 35.9% accuracy spike over 3 epochs of training on Vim-Ti. Moreover, Vim-Ti/S/B are re-trained within 5/7/17 minutes, and Vim-S only drops 1.3% with 1.2x (up to 1.5x) speed up in inference.

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Mingjia Shi, Yuhao Zhou, Ruiji Yu, Zekai Li, Zhiyuan Liang, Xuanlei Zhao, Xiaojiang Peng, Shanmukha Ramakrishna Vedantam, Wangbo Zhao, Kai Wang, Yang You. 2024-12-17. Faster Vision Mamba is Rebuilt in Minutes via Merged Token Re-training. https://arxiv.org/abs/2412.12496

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