A New Method of Image Classification Based on Domain Adaptation

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 4; p. 1315
• Main Authors: Zhao, Fangwen, Liu, Weifeng, Wen, Chenglin
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 09-02-2022; MDPI
• Subjects: Acclimatization; Adaptation; Algorithms; Computational linguistics; domain adaptation; Domains; Fault diagnosis; Image classification; Knowledge management; Language processing; Learning; maximum mean discrepancy; Methods; Natural language interfaces; Neural networks; Neural Networks, Computer; Probability distribution; unsupervised learning; Germany; domain adaptation; maximum mean discrepancy; unsupervised learning
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s22041315

Deep neural networks can learn powerful representations from massive amounts of labeled data; however, their performance is unsatisfactory in the case of large samples and small labels. Transfer learning can bridge between a source domain with rich sample data and a target domain with only a few or zero labeled samples and, thus, complete the transfer of knowledge by aligning the distribution between domains through methods, such as domain adaptation. Previous domain adaptation methods mostly align the features in the feature space of all categories on a global scale. Recently, the method of locally aligning the sub-categories by introducing label information achieved better results. Based on this, we present a deep fuzzy domain adaptation (DFDA) that assigns different weights to samples of the same category in the source and target domains, which enhances the domain adaptive capabilities. Our experiments demonstrate that DFDA can achieve remarkable results on standard domain adaptation datasets.