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Research Article | Open Access

Noise-robust few-shot classification via variational adversarial data augmentation

College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao 266580, China
College of Control Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
School of Information Science and Engineering, Yunnan University, Yunnan 650504, China
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Graphical Abstract

Abstract

Few-shot classification models trained with clean samples poorly classify samples from the real world with various scales of noise. To enhance the model for recognizing noisy samples, researchers usually utilize data augmentation or use noisy samples generated by adversarial training for model training. However, existing methods still have problems: (ⅰ) The effects of data augmentation on the robustness of the model are limited. (ⅱ) The noise generated by adversarial training usually causes overfitting and reduces the generalization ability of the model, which is very significant for few-shot classification. (ⅲ) Most existing methods cannot adaptively generate appropriate noise. Given the above three points, this paper proposes a noise-robust few-shot classification algorithm, VADA—Variational Adversarial Data Augmentation. Unlike existing methods, VADA utilizes a variational noise generator to generate an adaptive noise distribution according to different samples based on adversarial learning, and optimizes the generator by minimizing the expectation of the empirical risk. Applying VADA during training can make few-shot classification more robust against noisy data, while retaining generalization ability. In this paper, we utilize FEAT and ProtoNet as baseline models, and accuracy is verified on several common few-shot classification datasets, including MiniImageNet, TieredImageNet, and CUB. After training with VADA, the classification accuracy of the models increases for samples with various scales of noise.

Keywords

few-shot learningadversarial learningrobustnessvariational method

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Computational Visual Media
Volume 11 Issue 1,
February 2025
Pages 227-239
DOI: 10.26599/CVM.2025.9450403
Cite this article:
Xu R, Liu B, Zhang K, et al. Noise-robust few-shot classification via variational adversarial data augmentation. Computational Visual Media, 2025, 11(1): 227-239. https://doi.org/10.26599/CVM.2025.9450403

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Received: 09 January 2022
Accepted: 16 January 2024
Published: 28 February 2025
© The Author(s) 2025.

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