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CLDA: Contrastive Learning for Semi-Supervised Domain Adaptation

Computer Vision and Pattern Recognition 2021-11-11 v2

Abstract

Unsupervised Domain Adaptation (UDA) aims to align the labeled source distribution with the unlabeled target distribution to obtain domain invariant predictive models. However, the application of well-known UDA approaches does not generalize well in Semi-Supervised Domain Adaptation (SSDA) scenarios where few labeled samples from the target domain are available. In this paper, we propose a simple Contrastive Learning framework for semi-supervised Domain Adaptation (CLDA) that attempts to bridge the intra-domain gap between the labeled and unlabeled target distributions and inter-domain gap between source and unlabeled target distribution in SSDA. We suggest employing class-wise contrastive learning to reduce the inter-domain gap and instance-level contrastive alignment between the original (input image) and strongly augmented unlabeled target images to minimize the intra-domain discrepancy. We have shown empirically that both of these modules complement each other to achieve superior performance. Experiments on three well-known domain adaptation benchmark datasets namely DomainNet, Office-Home, and Office31 demonstrate the effectiveness of our approach. CLDA achieves state-of-the-art results on all the above datasets.

Keywords

Cite

@article{arxiv.2107.00085,
  title  = {CLDA: Contrastive Learning for Semi-Supervised Domain Adaptation},
  author = {Ankit Singh},
  journal= {arXiv preprint arXiv:2107.00085},
  year   = {2021}
}

Comments

NeurIPS 2021

R2 v1 2026-06-24T03:46:59.336Z