Unsupervised domain adaptation methods aim to alleviate performance degradation caused by domain-shift by learning domain-invariant representations. Existing deep domain adaptation methods focus on holistic feature alignment by matching source and target holistic feature distributions, without considering local features and their multi-mode statistics. We show that the learned local feature patterns are more generic and transferable and a further local feature distribution matching enables fine-grained feature alignment. In this paper, we present a method for learning domain-invariant local feature patterns and jointly aligning holistic and local feature statistics. Comparisons to the state-of-the-art unsupervised domain adaptation methods on two popular benchmark datasets demonstrate the superiority of our approach and its effectiveness on alleviating negative transfer.

本文介绍了一种方法，它通过学习领域不变的局部特征模式并联合对齐整体和局部特征统计量，从而进一步实现细粒度特征对齐，并在两个流行的基准数据集上将其与现有的无监督领域适应方法进行比较，证明了我们方法的优越性和对减轻负迁移的有效性。

利用本地特征模式进行无监督领域自适应