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arXiv 2403.19979cs.CVcs.AIcs.LG

用于类增量学习的具有语义偏移补偿的持续适配器微调

Continual Adapter Tuning with Semantic Shift Compensation for Class-Incremental Learning

HUST AI & Visual Learning Lab (HAIV Lab)(华中科技大学人工智能与视觉学习实验室);Huazhong University of Science and Technology (HUST)(华中科技大学);Department of Computer Science(计算机科学系);Boston University(波士顿大学);ByteDance, Inc.(字节跳动公司)

Qinhao Zhou, Yuwen Tan, Boqing Gong, Xiang Xiang

AI总结:

本文提出一种持续适配器微调方法,通过增量微调共享适配器并利用原型特征采样重训分类器,结合无样本的旧原型语义偏移估计与更新,在避免模型扩展和图像存储的同时实现了SOTA的类增量学习性能。

摘要:

类增量学习(CIL)旨在使模型能够持续学习新类,同时克服灾难性遗忘。预训练模型的引入为 CIL 带来了新的微调范式。在本文中,我们重新审视了持续学习背景下的不同参数高效微调(PET)方法。我们观察到,适配器微调展现出优于基于提示的方法的优越性,甚至在每次学习会话中无需进行参数扩展。受此启发,我们提出在不施加参数更新约束的情况下增量微调共享适配器,从而增强主干网络的学习能力。此外,我们采用从存储的原型中进行特征采样来重新训练统一的分类器,进一步提升其性能。我们在无法访问过去样本的情况下估计旧原型的语义偏移,并逐会话更新存储的原型。我们提出的方法消除了模型扩展并避免了保留任何图像样本。它超越了以往基于预训练模型的 CIL 方法,并展现出卓越的持续学习能力。在五个 CIL 基准上的实验结果验证了我们方法的有效性,实现了最先进(SOTA)的性能。

英文摘要:

Class-incremental learning (CIL) aims to enable models to continuously learn new classes while overcoming catastrophic forgetting. The introduction of pre-trained models has brought new tuning paradigms to CIL. In this paper, we revisit different parameter-efficient tuning (PET) methods within the context of continual learning. We observe that adapter tuning demonstrates superiority over prompt-based methods, even without parameter expansion in each learning session. Motivated by this, we propose incrementally tuning the shared adapter without imposing parameter update constraints, enhancing the learning capacity of the backbone. Additionally, we employ feature sampling from stored prototypes to retrain a unified classifier, further improving its performance. We estimate the semantic shift of old prototypes without access to past samples and update stored prototypes session by session. Our proposed method eliminates model expansion and avoids retaining any image samples. It surpasses previous pre-trained model-based CIL methods and demonstrates remarkable continual learning capabilities. Experimental results on five CIL benchmarks validate the effectiveness of our approach, achieving state-of-the-art (SOTA) performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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