arXiv:2504.00460cs.LGcs.AI2025-04中稿 · ICDE 2025 PhD Symp…被引 3

MetaLoRA通过元学习实现动态低秩微调,提升模型适应能力。

MetaLoRA: Tensor-Enhanced Adaptive Low-Rank Fine-tuning

  • 引入元学习生成动态低秩参数,实现任务自适应调整
  • 在保持高效计算的同时,显著增强跨任务泛化性能
  • 适合需要快速适配新任务的轻量化模型部署场景

神经网络模型部署日益广泛,对模型适应与微调提出了巨大挑战。高效的适应机制对于维持模型在多样任务和领域中的性能至关重要。尽管低秩微调(LoRA)已成为一种有前景的参数高效微调方法,但其固定参数特性限制了应对动态任务需求的能力。现有LoRA变体主要关注参数压缩,忽视了动态参数调整与元学习能力的重要性。此外,多数方法仅处理静态适应,忽略了任务感知参数生成在应对多样化任务分布时的潜力。为此,本博士研究提出一种生成式LoRA方法,用于建模任务关系,并引入MetaLoRA——一种结合元学习原则的新颖参数高效适应框架。该工作构建了整合元参数生成与自适应低秩分解的综合架构,可有效处理任务特异性和任务无关特征。MetaLoRA通过引入元学习机制与动态参数调整策略,准确捕捉任务模式。据我们所知,这是首个将元学习增强应用于LoRA的尝试,在保持计算效率的同时显著提升适应能力。

原文摘要 · Abstract (English)

There has been a significant increase in the deployment of neural network models, presenting substantial challenges in model adaptation and fine-tuning. Efficient adaptation is crucial in maintaining model performance across diverse tasks and domains. While Low-Rank Adaptation (LoRA) has emerged as a promising parameter-efficient fine-tuning method, its fixed parameter nature limits its ability to handle dynamic task requirements effectively. Adapting models to new tasks can be challenging due to the need for extensive fine-tuning. Current LoRA variants primarily focus on general parameter reduction while overlooking the importance of dynamic parameter adjustment and meta-learning capabilities. Moreover, existing approaches mainly address static adaptations, neglecting the potential benefits of task-aware parameter generation in handling diverse task distributions. To address these limitations, this Ph.D. research proposes a LoRA generation approach to model task relationships and introduces MetaLoRA, a novel parameter-efficient adaptation framework incorporating meta-learning principles. This work develops a comprehensive architecture that integrates meta-parameter generation with adaptive low-rank decomposition, enabling efficient handling of both task-specific and task-agnostic features. MetaLoRA accurately captures task patterns by incorporating meta-learning mechanisms and dynamic parameter adjustment strategies. To our knowledge, this research represents the first attempt to provide a meta-learning enhanced LoRA variant, offering improved adaptation capability while maintaining computational efficiency in model fine-tuning.

低秩微调元学习参数高效模型适应

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