“…Domain alignment methods include DAN (Long et al, 2015), DANN (Ganin et al, 2016), JAN (Long et al, 2017a). Class-level methods include conditional alignment methods (CDAN (Long et al, 2018), DCAN (Li et al, 2020b), ALDA (Chen et al, 2020b)), and contrastive methods (DRMEA (Luo et al, 2020a), ETD (Li et al, 2020c), DADA (Tang and Jia, 2020b), SAFN Xu et al (2019)). We only report available results in each baseline.…”