Papers › Mnemonics Training: Multi-Class Incremental Learning without Forgetting

Mnemonics Training: Multi-Class Incremental Learning without Forgetting

24 Feb 2020CVPR 2020 6arXiv:2002.10211archive 2025-07-28

Yaoyao Liu, Yu-Ting Su, An-An Liu, Bernt Schiele, Qianru Sun

Multi-Class Incremental Learning (MCIL) aims to learn new concepts by incrementally updating a model trained on previous concepts. However, there is an inherent trade-off to effectively learning new concepts without catastrophic forgetting of previous ones. To alleviate this issue, it has been proposed to keep around a few examples of the previous concepts but the effectiveness of this approach heavily depends on the representativeness of these examples. This paper proposes a novel and automatic framework we call mnemonics, where we parameterize exemplars and make them optimizable in an end-to-end manner. We train the framework through bilevel optimizations, i.e., model-level and exemplar-level. We conduct extensive experiments on three MCIL benchmarks, CIFAR-100, ImageNet-Subset and ImageNet, and show that using mnemonics exemplars can surpass the state-of-the-art by a large margin. Interestingly and quite intriguingly, the mnemonics exemplars tend to be on the boundaries between different classes.

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yaoyao-liu/mnemonics officialmentioned in papermentioned on GitHubpytorch report
yaoyao-liu/class-incremental-learning mentioned on GitHubpytorchMIT report

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Class Incremental LearningContinual LearningIncremental Learningclass-incremental learning

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