Learning multi-level weight-centric features for few-shot learning

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Liang, Mingjiang
Huang, Shaoli
Pan, Shirui
Gong, Mingming
Liu, Wei
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2022
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Abstract

Few-shot learning is currently enjoying a considerable resurgence of interest, aided by the recent advance of deep learning. Contemporary approaches based on weight-generation scheme delivers a straightforward and flexible solution to the problem. However, they did not fully consider both the representation power for unseen categories and weight generation capacity in feature learning, making it a significant performance bottleneck. This paper proposes a multi-level weight-centric feature learning to give full play to feature extractor's dual roles in few-shot learning. Our proposed method consists of two essential techniques: a weight-centric training strategy to improve the features’ prototype-ability and a multi-level feature incorporating a mid- and relation-level information. The former increases the feasibility of constructing a discriminative decision boundary based on a few samples. Simultaneously, the latter helps improve the transferability for characterizing novel classes and preserve classification capability for base classes. We extensively evaluate our approach to low-shot classification benchmarks. Experiments demonstrate our proposed method significantly outperforms its counterparts in both standard and generalized settings and using different network backbones.

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Pattern Recognition

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128

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Subject

Pattern recognition

Machine learning

Science & Technology

Technology

Computer Science, Artificial Intelligence

Engineering, Electrical & Electronic

Computer Science

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Liang, M; Huang, S; Pan, S; Gong, M; Liu, W, Learning multi-level weight-centric features for few-shot learning, Pattern Recognition, 2022, 128, pp. 108662

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