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arXiv 2203.01012cs.LGcs.AI
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连续特征选择:持续学习中的伪特征

Continual Feature Selection: Spurious Features in Continual Learning

Université de Montréal(蒙特利尔大学);MILA-Quebec AI Institute(魁北克人工智能研究所MILA)

Timothée Lesort

摘要:

持续学习(ContinualLearning,CL)是研究数据分布非静态时的无遗忘学习的领域。研究了虚假特征对持续学习算法的影响。我们表明,持续学习算法解决任务,选择的功能是不可推广的。我们的实验强调,持续学习算法面临两个相关的问题:(1)虚假特征和(2)局部虚假特征。第一个是由于训练和测试数据之间的协变量偏移,而第二个是由于在每个训练步骤中对数据的访问有限。我们通过一组一致的持续学习实验来研究(1),这些实验改变了伪相关量和数据分布支持。我们发现,(2)是一个主要的原因,在持续学习的性能下降,随着灾难性遗忘。本文提出了一种不同的方式来理解性能下降的持续学习突出的影响,(本地)虚假功能的算法能力。

英文摘要:

Continual Learning (CL) is the research field addressing learning without forgetting when the data distribution is not static. This paper studies spurious features' influence on continual learning algorithms. We show that continual learning algorithms solve tasks by selecting features that are not generalizable. Our experiments highlight that continual learning algorithms face two related problems: (1) spurious features and (2) local spurious features. The first one is due to a covariate shift between training and testing data, while the second is due to the limited access to data at each training step. We study (1) through a consistent set of continual learning experiments varying spurious correlation amount and data distribution support. We show that (2) is a major cause of performance decrease in continual learning along with catastrophic forgetting. This paper presents a different way of understanding performance decrease in continual learning by highlighting the influence of (local) spurious features in algorithms capabilities.

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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