Papers › Improving Cross-domain Few-shot Classification with Multilayer Perceptron

Improving Cross-domain Few-shot Classification with Multilayer Perceptron

15 Dec 2023arXiv:2312.09589archive 2025-07-28

Shuanghao Bai, Wanqi Zhou, Zhirong Luan, Donglin Wang, Badong Chen

Cross-domain few-shot classification (CDFSC) is a challenging and tough task due to the significant distribution discrepancies across different domains. To address this challenge, many approaches aim to learn transferable representations. Multilayer perceptron (MLP) has shown its capability to learn transferable representations in various downstream tasks, such as unsupervised image classification and supervised concept generalization. However, its potential in the few-shot settings has yet to be comprehensively explored. In this study, we investigate the potential of MLP to assist in addressing the challenges of CDFSC. Specifically, we introduce three distinct frameworks incorporating MLP in accordance with three types of few-shot classification methods to verify the effectiveness of MLP. We reveal that MLP can significantly enhance discriminative capabilities and alleviate distribution shifts, which can be supported by our expensive experiments involving 10 baseline models and 12 benchmark datasets. Furthermore, our method even compares favorably against other state-of-the-art CDFSC algorithms.

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BaiShuanghao/CDFSC-MLP officialmentioned on GitHubpytorch report

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Tasks

ClassificationCross-Domain Few-ShotImage ClassificationUnsupervised Image Classificationimage-classification

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Cross-Domain Few-Shot ChestX RFS+MLP 5 shot 26.00 #3 of 11 Archive leaderboard report
Cross-Domain Few-Shot CropDisease RFS+MLP 5 shot 89.68 #6 of 9 Archive leaderboard report
Cross-Domain Few-Shot EuroSAT RFS+MLP 5 shot 78.13 #10 of 11 Archive leaderboard report
Cross-Domain Few-Shot ISIC2018 RFS+MLP 5 shot 46.33 #4 of 11 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

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