Papers › Few-Shot Learning with Global Class Representations

Few-Shot Learning with Global Class Representations

14 Aug 2019ICCV 2019 10arXiv:1908.05257archive 2025-07-28

Tiange Luo, Aoxue Li, Tao Xiang, Weiran Huang, Li-Wei Wang

In this paper, we propose to tackle the challenging few-shot learning (FSL) problem by learning global class representations using both base and novel class training samples. In each training episode, an episodic class mean computed from a support set is registered with the global representation via a registration module. This produces a registered global class representation for computing the classification loss using a query set. Though following a similar episodic training pipeline as existing meta learning based approaches, our method differs significantly in that novel class training samples are involved in the training from the beginning. To compensate for the lack of novel class training samples, an effective sample synthesis strategy is developed to avoid overfitting. Importantly, by joint base-novel class training, our approach can be easily extended to a more practical yet challenging FSL setting, i.e., generalized FSL, where the label space of test data is extended to both base and novel classes. Extensive experiments show that our approach is effective for both of the two FSL settings.

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Tasks

Few-Shot Image ClassificationFew-Shot LearningGeneralized Few-Shot ClassificationMeta-Learning

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Few-Shot Image Classification Mini-ImageNet - 1-Shot Learning GCR Accuracy 53.21 #14 of 16 Archive leaderboard report
Few-Shot Image Classification OMNIGLOT - 1-Shot, 20-way GCR Accuracy 99.63 #1 of 20 Archive leaderboard report
Few-Shot Image Classification OMNIGLOT - 5-Shot, 20-way GCR Accuracy 99.32 #6 of 19 Archive leaderboard report
Few-Shot Image Classification mini-ImageNet - 100-Way GCR Accuracy 39.14 #1 of 1 Archive leaderboard report

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