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• W3204328054 abstract "Recognizing new objects by learning from a few labeled examples in an evolving environment is crucial to obtain excellent generalization ability for real-world machine learning systems. A typical setting across current meta learning algorithms assumes a stationary task distribution during meta training. In this paper, we explore a more practical and challenging setting where task distribution changes over time with domain shift. Particularly, we consider realistic scenarios where task distribution is highly imbalanced with domain labels unavailable in nature. We propose a kernel-based method for domain change detection and a difficulty-aware memory management mechanism that jointly considers the imbalanced domain size and domain importance to learn across domains continuously. Furthermore, we introduce an efficient adaptive task sampling method during meta training, which significantly reduces task gradient variance with theoretical guarantees. Finally, we propose a challenging benchmark with imbalanced domain sequences and varied domain difficulty. We have performed extensive evaluations on the proposed benchmark, demonstrating the effectiveness of our method." @default.
• W3204328054 created "2021-10-11" @default.
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• W3204328054 date "2021-10-01" @default.
• W3204328054 modified "2023-10-16" @default.
• W3204328054 title "Meta Learning on a Sequence of Imbalanced Domains with Difficulty Awareness" @default.
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• W3204328054 doi "https://doi.org/10.1109/iccv48922.2021.00882" @default.
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