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Co-regularized alignment for unsupervised domain adaptation

Author(s)
Kumar, Abhishek; Wadhawan, Kahini; Feris, Rogerio; Sattigeri, Prasanna; Karlinsky, Leonid; Freeman, William T.; Wornell, Gregory; ... Show more Show less
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Abstract
Deep neural networks, trained with large amount of labeled data, can fail to generalize well when tested with examples from a target domain whose distribution differs from the training data distribution, referred as the source domain. It can be expensive or even infeasible to obtain required amount of labeled data in all possible domains. Unsupervised domain adaptation sets out to address this problem, aiming to learn a good predictive model for the target domain using labeled examples from the source domain but only unlabeled examples from the target domain. Domain alignment approaches this problem by matching the source and target feature distributions, and has been used as a key component in many state-of-the-art domain adaptation methods. However, matching the marginal feature distributions does not guarantee that the corresponding class conditional distributions will be aligned across the two domains. We propose co-regularized domain alignment for unsupervised domain adaptation, which constructs multiple diverse feature spaces and aligns source and target distributions in each of them individually, while encouraging that alignments agree with each other with regard to the class predictions on the unlabeled target examples. The proposed method is generic and can be used to improve any domain adaptation method which uses domain alignment. We instantiate it in the context of a recent state-of-the-art method and observe that it provides significant performance improvements on several domain adaptation benchmarks. ©2018 Presented as poster at the 2018 Conference on Neural Information Processing Systems (NeurIPS 2018), December 3-8, 2018, Montreal, Quebec
Date issued
2018-12
URI
https://hdl.handle.net/1721.1/124757
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; MIT-IBM Watson AI Lab
Journal
Advances in Neural Information Processing Systems
Citation
Kumar, Abhishek, et al., "Co-regularized alignment for unsupervised domain adaptation." Advances in Neural Information Processing Systems 31, edited by S. Bengio, et al. (San Diego, California: Neural Information Processing Systems Foundation, Inc., 2018): url http://papers.nips.cc/paper/8146-co-regularized-alignment-for-unsupervised-domain-adaptation ©2018 Author(s)
Version: Final published version

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