做无监督学习和持续学习的团队终于有了聚类场景的专用方案——FBCC 不依赖标签和旧数据就能保持聚类结构，做数据流聚类或隐私敏感场景的开发者可以直接参考实验设置。
本文提出无监督持续聚类（UCC）问题，并引入前向-后向知识蒸馏持续聚类方法（FBCC）。该方法通过持续教师网络和轻量级任务特定学生，在无标签且不存储旧数据的情况下，学习新聚类同时保留已有聚类结构。实验表明，FBCC在四个基准数据集上持续优于现有持续学习方法，显著减少灾难性遗忘。这是首个专门针对无监督持续聚类的研究，解决了该领域缺乏聚类特定目标的问题。
Unsupervised Continual Clustering via Forward-Backward Knowledge Distillation
Unsupervised Continual Learning (UCL) aims to enable neural networks to learn sequential tasks without labels or access to past data. A major challenge in this setting is Catastrophic Forgetting, where models forget previously learned tasks upon learning new ones. This challenge is amplified in UCL due to the absence of labels to guide learning and memory retention. Existing mitigation strategies, such as knowledge distillation and replay buffers, often raise memory and privacy concerns. Moreover, current UCL methods largely overlook clustering-specific objectives. To fill this gap, we introduce Unsupervised Continual Clustering (UCC) and propose Forward-Backward Knowledge Distillation for Continual Clustering (FBCC). FBCC employs a continual teacher network with a clustering projector and lightweight task-specific students. Through a dual-phase forward-backward distillation process, the teacher learns new clusters while preserving previously discovered cluster structure without storing past data. FBCC represents a pioneering approach to UCC, demonstrating improved clustering performance across sequential tasks. Experiments on four benchmark datasets demonstrate that FBCC consistently outperforms existing continual learning baselines in clustering accuracy while significantly reducing catastrophic forgetting.