arXiv:2607.06796cs.LGcs.AI2026-07

用知识蒸馏让时间序列分类模型更小更快,效果显著

Enhancing deep learning models for time series classification via knowledge distillation

  • 用大模型教小模型,优化卷积、注意力等结构
  • 蒸馏后模型参数减少38倍,性能几乎不变
  • 适合资源受限场景,代码开源可复现

深度学习在时间序列分析等领域表现卓越,但其高计算与内存需求限制了在资源受限环境中的部署。知识蒸馏(KD)通过将大模型的知识迁移至更小高效的的学生模型,在保持竞争力性能的同时降低开销。本文研究了三种架构(FCN、Inception、ConvTran)在时间序列分类任务中应用KD的效果。实验基于UCR Archive基准库,对卷积核、Inception模块和注意力头等组件进行调整。结果表明,中等复杂度的学生模型最受益于蒸馏:蒸馏后的FCN学生模型参数减少38倍;蒸馏后的Inception学生模型仅用42%参数即达到教师模型性能;蒸馏后的ConvTran学生模型(2个注意力头)提升最明显。为促进研究与复现,代码已开源。

原文摘要 · Abstract (English)

Deep learning has achieved remarkable success in various domains including time series analysis, computer vision and natural language processing. However, high computational and memory demands of state-of-the-art architectures pose challenges for deployment in resource-limited environments. Knowledge Distillation (KD) addresses this by transferring knowledge from a large teacher model to a smaller, more efficient student model while maintaining competitive performance. In this work, we investigate the effectiveness of KD for Time Series Classification (TSC) across three architectures: the classical Fully Convolutional Network (FCN), the convolutional Inception model and the transformer-based ConvTran model. We evaluate our approach on UCR Archive, the largest benchmark repository of time series datasets, by modifying architectural components such as convolutional filters, Inception modules and attention heads across the three architectures. Our results consistently show that KD most effectively benefits student models of intermediate complexity across all three architectures, with the distilled FCN student reducing parameters by a factor of 38, the distilled Inception student achieving nearly the same performance as the teacher with 42% fewer parameters and the distilled ConvTran student with 2 attention heads showing the most significant improvement through distillation. To encourage further research and reproducibility, we provide our implementation at https://github.com/MSD-IRIMAS/KD-4-TSC.

知识蒸馏时间序列模型压缩深度学习

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