Few shot classification aims to learn to recognize novel categories using
only limited samples per category. Most current few shot methods use a base
dataset rich in labeled examples to train an encoder that is used for obtaining
representations of support instances for novel classes. Since the test
instances are from a distribution different to the base distribution, their
feature representations are of poor quality, degrading performance. In this
paper we propose to make use of the well-trained feature representations of the
base dataset that are closest to each support instance to improve its
representation during meta-test time. To this end, we propose BaseTransformers,
that attends to the most relevant regions of the base dataset feature space and
improves support instance representations. Experiments on three benchmark data
sets show that our method works well for several backbones and achieves
state-of-the-art results in the inductive one shot setting. Code is available
at this http URL

本文提出使用已训练好的特征表示，改善元测试期间每个支持实例的表示，进而提高 Few-shot 分类的性能，通过实验证明，该方法在各模型背景下都有较好的表现，达到了最新的状况。