Multi-View Prototypical Transport for Unsupervised Domain Adaptation

Unsupervised Domain Adaptation (UDA) methods struggle to bridge the gap between a labeled source domain and an unlabeled target domain, particularly due to the rigidity of deep feature representations derived from the penultimate layer of backbone feature extractors. These deeper representations, wh...

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Main Authors: Sunhyeok Lee, Dae-Shik Kim
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10836683/
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author Sunhyeok Lee
Dae-Shik Kim
author_facet Sunhyeok Lee
Dae-Shik Kim
author_sort Sunhyeok Lee
collection DOAJ
description Unsupervised Domain Adaptation (UDA) methods struggle to bridge the gap between a labeled source domain and an unlabeled target domain, particularly due to the rigidity of deep feature representations derived from the penultimate layer of backbone feature extractors. These deeper representations, while discriminative, often fail to generalize under distributional shifts due to their specificity. To overcome these limitations, we introduce a novel representation learning framework, Multi-view Prototypical Transport (MPT), which leverages a multi-view hypothesis model to integrate and utilize the general information present in shallower layers. This approach facilitates a more comprehensive understanding of the relationships among intermediate features. Additionally, our framework incorporates a novel multi-view prototypical learning strategy that not only transfers domain-general representations, but also significantly enhances robustness against target domain outliers. Extensive experimental evaluations on various benchmark datasets demonstrate that our method outperforms existing state-of-the-art UDA approaches, confirming the effectiveness of our strategy in adapting to complex domain shifts.
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issn 2169-3536
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spelling doaj-art-548dd03ddbda4c4d92542af3b91019982025-01-21T00:01:46ZengIEEEIEEE Access2169-35362025-01-01138482849410.1109/ACCESS.2025.352805410836683Multi-View Prototypical Transport for Unsupervised Domain AdaptationSunhyeok Lee0https://orcid.org/0000-0001-5530-5424Dae-Shik Kim1https://orcid.org/0000-0002-9131-8086Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South KoreaDepartment of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South KoreaUnsupervised Domain Adaptation (UDA) methods struggle to bridge the gap between a labeled source domain and an unlabeled target domain, particularly due to the rigidity of deep feature representations derived from the penultimate layer of backbone feature extractors. These deeper representations, while discriminative, often fail to generalize under distributional shifts due to their specificity. To overcome these limitations, we introduce a novel representation learning framework, Multi-view Prototypical Transport (MPT), which leverages a multi-view hypothesis model to integrate and utilize the general information present in shallower layers. This approach facilitates a more comprehensive understanding of the relationships among intermediate features. Additionally, our framework incorporates a novel multi-view prototypical learning strategy that not only transfers domain-general representations, but also significantly enhances robustness against target domain outliers. Extensive experimental evaluations on various benchmark datasets demonstrate that our method outperforms existing state-of-the-art UDA approaches, confirming the effectiveness of our strategy in adapting to complex domain shifts.https://ieeexplore.ieee.org/document/10836683/Multi-view learningoptimal transportprototypical learningunsupervised domain adaptation
spellingShingle Sunhyeok Lee
Dae-Shik Kim
Multi-View Prototypical Transport for Unsupervised Domain Adaptation
IEEE Access
Multi-view learning
optimal transport
prototypical learning
unsupervised domain adaptation
title Multi-View Prototypical Transport for Unsupervised Domain Adaptation
title_full Multi-View Prototypical Transport for Unsupervised Domain Adaptation
title_fullStr Multi-View Prototypical Transport for Unsupervised Domain Adaptation
title_full_unstemmed Multi-View Prototypical Transport for Unsupervised Domain Adaptation
title_short Multi-View Prototypical Transport for Unsupervised Domain Adaptation
title_sort multi view prototypical transport for unsupervised domain adaptation
topic Multi-view learning
optimal transport
prototypical learning
unsupervised domain adaptation
url https://ieeexplore.ieee.org/document/10836683/
work_keys_str_mv AT sunhyeoklee multiviewprototypicaltransportforunsuperviseddomainadaptation
AT daeshikkim multiviewprototypicaltransportforunsuperviseddomainadaptation