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- W4307123669 abstract "Few-shot learning methods aim to embed the data to a low-dimensional embedding space and then classify the unseen query data to the seen support set. While these works assume that the support set and the query set lie in the same embedding space, a distribution shift usually occurs between the support set and the query set, i.e., the Support-Query Shift, in the real world. Though optimal transportation has shown convincing results in aligning different distributions, we find that the small perturbations in the images would significantly misguide the optimal transportation and thus degrade the model performance. To relieve the misalignment, we first propose a novel adversarial data augmentation method, namely Perturbation-Guided Adversarial Alignment (PGADA), which generates the hard examples in a self-supervised manner. In addition, we introduce Regularized Optimal Transportation to derive a smooth optimal transportation plan. Extensive experiments on three benchmark datasets manifest that our framework significantly outperforms the eleven state-of-the-art methods on three datasets." @default.
- W4307123669 created "2022-10-27" @default.
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- W4307123669 date "2022-05-08" @default.
- W4307123669 modified "2023-09-26" @default.
- W4307123669 title "PGADA: Perturbation-Guided Adversarial Alignment for Few-shot Learning Under the Support-Query Shift" @default.
- W4307123669 doi "https://doi.org/10.48550/arxiv.2205.03817" @default.
- W4307123669 hasPublicationYear "2022" @default.
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