“…Recent study [9] finds that most of the existing FSL methods [12, 15, 17, 28, 37, 37, 39, 41-43, 46, 52-54] that assume the source and target datasets belong to the same distribution fail to generalize to novel datasets with a domain gap. Thus, CD-FSL which aims at addressing FSL across different domains has risen increasing attentions [4,13,14,18,24,33,40,44,48]. In this paper, these CD-FSL methods are categorized according to which kind of data are being used for training: 1) CD-FSL with only source data [14,40,44,48]; 2) CD-FSL with unlabeled target data [24,33]; 3) CD-FSL with labeled target data [13].…”