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Gradient Reweighting: Towards Imbalanced Class-Incremental Learning
Feb. 29, 2024, 5:45 a.m. | Jiangpeng He, Fengqing Zhu
cs.CV updates on arXiv.org arxiv.org
Abstract: Class-Incremental Learning (CIL) trains a model to continually recognize new classes from non-stationary data while retaining learned knowledge. A major challenge of CIL arises when applying to real-world data characterized by non-uniform distribution, which introduces a dual imbalance problem involving (i) disparities between stored exemplars of old tasks and new class data (inter-phase imbalance), and (ii) severe class imbalances within each individual task (intra-phase imbalance). We show that this dual imbalance issue causes skewed gradient …
abstract arxiv challenge class cs.cv data distribution gradient incremental knowledge major tasks trains type uniform world
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