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Dynamic Scalable Self-Attention Ensemble for Task-Free Continual Learning

Fei Ye (University of york); Adrian Bors (University of York)

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07 Jun 2023

Continual learning represents a challenging task for modern deep neural networks due to the catastrophic forgetting following the adaptation of network parameters to new tasks. In this paper, we address a more challenging learning paradigm called Task-Free Continual Learning (TFCL), in which the task information is missing during the training. To deal with this problem, we introduce the Dynamic Scalable Self-Attention Ensemble (DSSAE) model, which dynamically adds new Vision Transformer (ViT) based-experts to deal with the data distribution shift during the training. To avoid frequent expansions and ensure an appropriate number of experts for the model, we propose a new dynamic expansion mechanism that evaluates the novelty of incoming samples as expansion signals. Furthermore, the proposed expansion mechanism does not require knowing the task information or the class label, which can be used in a realistic learning environment. Empirical results demonstrate that the proposed DSSAE achieves state-of-the-art performance in a series of TFCL experiments.

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    Non-members: $15.00