Make the U in UDA Matter: Invariant Consistency Learning for Unsupervised Domain Adaptation

• URL: http://arxiv.org/abs/2309.12742v2
• Date: Mon, 4 Dec 2023 03:15:24 GMT
• Title: Make the U in UDA Matter: Invariant Consistency Learning for Unsupervised Domain Adaptation
• Authors: Zhongqi Yue, Hanwang Zhang, Qianru Sun
• Abstract summary: We dub our approach "Invariant CONsistency learning" (ICON) We propose to make the U in Unsupervised DA matter by giving equal status to the two domains. ICON achieves the state-of-the-art performance on the classic UDA benchmarks: Office-Home and VisDA-2017, and outperforms all the conventional methods on the challenging WILDS 2.0 benchmark.
• Score: 86.61336696914447
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Domain Adaptation (DA) is always challenged by the spurious correlation between domain-invariant features (e.g., class identity) and domain-specific features (e.g., environment) that does not generalize to the target domain. Unfortunately, even enriched with additional unsupervised target domains, existing Unsupervised DA (UDA) methods still suffer from it. This is because the source domain supervision only considers the target domain samples as auxiliary data (e.g., by pseudo-labeling), yet the inherent distribution in the target domain -- where the valuable de-correlation clues hide -- is disregarded. We propose to make the U in UDA matter by giving equal status to the two domains. Specifically, we learn an invariant classifier whose prediction is simultaneously consistent with the labels in the source domain and clusters in the target domain, hence the spurious correlation inconsistent in the target domain is removed. We dub our approach "Invariant CONsistency learning" (ICON). Extensive experiments show that ICON achieves the state-of-the-art performance on the classic UDA benchmarks: Office-Home and VisDA-2017, and outperforms all the conventional methods on the challenging WILDS 2.0 benchmark. Codes are in https://github.com/yue-zhongqi/ICON.

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