Improved prototypical networks for few-Shot learning

Few-Shot Learning (FSL) aims at recognizing the target classes that only a few samples are available for training. The current approaches mostly address FSL by learning a generalized class-level metric while neglect the intra-class distribution information. In this work, we propose Improved Prototypical Networks (IPN) to address this issue. Inspired by the observation that the intra-class samples differ greatly in revealing the class distribution, we first propose an attention-analogous strategy to explore the class distribution information by distributing different weights to samples based on their representativeness. Besides, to further explore the discriminative information across classes, we propose a distance scaling strategy to reduce the intra-class difference while enlarge the inter-class difference. The experimental results on two benchmark datasets show the superiority of the proposed model against the state-of-the-art approaches.