From the beginning of zero-shot learning research, visual attributes have been shown to play an important role. In order to better transfer attribute-based knowledge from known to unknown classes, we argue that an image representation with integrated attribute localization ability would be beneficial for zero-shot learning. To this end, we propose a novel zero-shot representation learning framework that jointly learns discriminative global and local features using only class-level attributes. While a visual-semantic embedding layer learns global features, local features are learned through an attribute prototype network that simultaneously regresses and decorrelates attributes from intermediate features. We show that our locality augmented image representations achieve a new state-of-the-art on three zero-shot learning benchmarks. As an additional benefit, our model points to the visual evidence of the attributes in an image, e.g. for the CUB dataset, confirming the improved attribute localization ability of our image representation. The code will be publicaly available at https://wenjiaxu.github.io/APN-ZSL/.

通过集成属性局部化能力的图像表示，建议使用只有类别级别的属性来更好地将基于属性的知识从已知类别转移到未知类别，为此，提出了一种新的零样本表示学习框架，使用属性原型网络共同学习具有区分性全局和局部特征。对于三个零样本学习基准测试，我们的局部增强图像表示方法实现了一个新的最先进水平。

零样本学习的属性原型网络