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arXiv 2504.08823cs.LGcs.AIcs.CV

FM-LoRA:用于持续学习的因式分解低秩元提示

FM-LoRA: Factorized Low-Rank Meta-Prompting for Continual Learning

Washington University in St. Louis(圣路易斯华盛顿大学);MBZUAI(穆罕默德·本·扎耶德人工智能大学);Yale University(耶鲁大学)

Xiaobing Yu, Jin Yang, Xiao Wu, Peijie Qiu, Xiaofeng Liu

AI总结:

针对持续学习中参数增长不可持续、缺乏任务相似性感知的问题,提出集成动态秩选择器和动态元提示的FM-LoRA方法,通过共享低秩子空间分配模型容量,在多基准上有效缓解灾难性遗忘并维持稳健性能。

摘要:

如何使预训练模型持续适应具有不同预测类别标签和域的序列任务,并最终学习一个在不同任务间可泛化的模型,是一项长期挑战。持续学习(CL)已成为利用预训练模型(如Transformers)处理序列任务的有前景方法。许多现有CL方法会增量存储额外学习结构,如低秩适应(LoRA)适配器或提示,有时甚至保留先前样本的特征以维持性能。随着任务数量增加,这导致参数增长不可持续且存储成本攀升。此外,当前方法常缺乏任务相似性感知,进一步阻碍模型在不干扰已有知识的情况下有效适应新任务。为应对这些挑战,我们提出FM-LoRA,一种新颖高效的低秩适应方法,集成动态秩选择器(DRS)和动态元提示(DMP)。该框架通过利用对知识保留至关重要的共享低秩子空间,更有效地在任务间分配模型容量,从而避免参数持续扩展。在各类CL基准上的广泛实验(包括用于类别增量学习的ImageNet-R、CIFAR100和CUB200,以及用于域增量学习的DomainNet,以Transformers为骨干)表明,FM-LoRA有效缓解灾难性遗忘,同时在不同任务和域中提供稳健性能。

英文摘要:

How to adapt a pre-trained model continuously for sequential tasks with different prediction class labels and domains and finally learn a generalizable model across diverse tasks is a long-lasting challenge. Continual learning (CL) has emerged as a promising approach to leverage pre-trained models (e.g., Transformers) for sequential tasks. While many existing CL methods incrementally store additional learned structures, such as Low-Rank Adaptation (LoRA) adapters or prompts and sometimes even preserve features from previous samples to maintain performance. This leads to unsustainable parameter growth and escalating storage costs as the number of tasks increases. Moreover, current approaches often lack task similarity awareness, which further hinders the models ability to effectively adapt to new tasks without interfering with previously acquired knowledge. To address these challenges, we propose FM-LoRA, a novel and efficient low-rank adaptation method that integrates both a dynamic rank selector (DRS) and dynamic meta-prompting (DMP). This framework allocates model capacity more effectively across tasks by leveraging a shared low-rank subspace critical for preserving knowledge, thereby avoiding continual parameter expansion. Extensive experiments on various CL benchmarks, including ImageNet-R, CIFAR100, and CUB200 for class-incremental learning (CIL), and DomainNet for domain-incremental learning (DIL), with Transformers backbone demonstrate that FM-LoRA effectively mitigates catastrophic forgetting while delivering robust performance across a diverse range of tasks and domains.

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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