arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.15751cs.CV

F-OAL:类别增量学习中具备快速训练与低内存占用的仅前向在线解析学习

F-OAL: Forward-only Online Analytic Learning with Fast Training and Low Memory Footprint in Class Incremental Learning

South China University of Technology(华南理工大学);The University of Hong Kong(香港大学);Pazhou Lab(琶洲实验室);The Hong Kong Polytechnic University(香港理工大学)

Huiping Zhuang, Yuchen Liu, Run He, Kai Tong, Ziqian Zeng, Cen Chen, Yi Wang, Lap-Pui Chau

AI总结:

针对在线类别增量学习的灾难性遗忘问题,提出无样本的仅前向在线解析学习方法F-OAL,通过前向传播结合递归最小二乘更新分类器,兼顾高精度与低资源消耗,在基准数据集上表现鲁棒。

摘要:

在线类别增量学习(OCIL)旨在以增量方式训练模型,数据以小批量形式到达,且无法获取先前数据。OCIL的一大挑战是灾难性遗忘,即先前习得知识的丢失。在现有基准方法中,基于回放的方法表现出具有竞争力的结果,但需要额外内存存储样本;而无样本(即生产环境中无需存储数据用于回放)方法资源友好,但往往精度不足。本文提出一种无样本方法——仅前向在线解析学习(F-OAL)。与传统方法不同,F-OAL不依赖反向传播,仅需前向传播,显著降低了内存占用与计算时间。配合带特征融合的预训练冻结编码器,F-OAL仅需通过递归最小二乘更新线性分类器。该方法同时实现了高精度与低资源消耗。在基准数据集上的大量实验证明了F-OAL在OCIL场景下的鲁棒性能。代码可在https://github.com/liuyuchen-cz/F-OAL获取。

英文摘要:

Online Class Incremental Learning (OCIL) aims to train models incrementally, where data arrive in mini-batches, and previous data are not accessible. A major challenge in OCIL is Catastrophic Forgetting, i.e., the loss of previously learned knowledge. Among existing baselines, replay-based methods show competitive results but requires extra memory for storing exemplars, while exemplar-free (i.e., data need not be stored for replay in production) methods are resource-friendly but often lack accuracy. In this paper, we propose an exemplar-free approach--Forward-only Online Analytic Learning (F-OAL). Unlike traditional methods, F-OAL does not rely on back-propagation and is forward-only, significantly reducing memory usage and computational time. Cooperating with a pre-trained frozen encoder with Feature Fusion, F-OAL only needs to update a linear classifier by recursive least square. This approach simultaneously achieves high accuracy and low resource consumption. Extensive experiments on benchmark datasets demonstrate F-OAL's robust performance in OCIL scenarios. Code is available at https://github.com/liuyuchen-cz/F-OAL.

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。

↑