Recently, because of the high-quality representations of contrastive learning methods, rehearsal-based contrastive continual learning has been proposed to explore how to continually learn transferable representation embeddings to avoid the catastrophic forgetting issue in traditional continual settings. Based on this framework, we propose Contrastive Continual Learning via Importance Sampling (CCLIS) to preserve knowledge by recovering previous data distributions with a new strategy for Replay Buffer Selection (RBS), which minimize estimated variance to save hard negative samples for representation learning with high quality. Furthermore, we present the Prototype-instance Relation Distillation (PRD) loss, a technique designed to maintain the relationship between prototypes and sample representations using a self-distillation process. Experiments on standard continual learning benchmarks reveal that our method notably outperforms existing baselines in terms of knowledge preservation and thereby effectively counteracts catastrophic forgetting in online contexts. The code is available at https://github.com/lijy373/CCLIS.

基于对比学习的连续学习方法，该研究提出了基于重放缓冲区选择（RBS）的对比连续学习方法以确保知识的保留，并使用原型-实例关系蒸馏（PRD）损失来维护样本表示与原型之间的关系，实验证明该方法在在线环境中有效消除灾难性遗忘问题。

基于重要性采样和原型-实例关系蒸馏的对比持续学习