We propose an active learning approach for transferring representations across domains. Our approach, active adversarial domain adaptation (AADA), explores a duality between two related problems: adversarial domain alignment and importance sampling for adapting models across domains. The former uses a domain discriminative model to align domains, while the latter utilizes it to weigh samples to account for distribution shifts. Specifically, our importance weight promotes samples with large uncertainty in classification and diversity from labeled examples, thus serves as a sample selection scheme for active learning. We show that these two views can be unified in one framework for domain adaptation and transfer learning when the source domain has many labeled examples while the target domain does not. AADA provides significant improvements over fine-tuning based approaches and other sampling methods when the two domains are closely related. Results on challenging domain adaptation tasks, e.g., object detection, demonstrate that the advantage over baseline approaches is retained even after hundreds of examples being actively annotated.

提出了一种积极学习的方法，通过敌对领域自适应（AADA）进行表示转移，其探索了两个相关问题之间的双重性：敌对领域对齐和重要性采样来适应跨域模型， 以及将两种方法结合在一个框架中进行领域自适应和转移学习，当源域有许多标记示例而目标域没有时，它提供了重要的改进。

主动对抗域自适应