Inferring Latent Domains for Unsupervised Deep Domain Adaptation

Area of Science:

• Computer Science
• Artificial Intelligence
• Machine Learning

Background:

• Unsupervised Domain Adaptation (UDA) enables model learning in unlabeled target domains using labeled source data.
• Traditional UDA methods often assume single source and target distributions, which is limiting for complex, multi-domain datasets.
• Discovering latent domains within datasets is crucial for effective adaptation when domain labels are unavailable.

Purpose of the Study:

• To develop a novel deep architecture for Unsupervised Domain Adaptation that automatically identifies latent domains.
• To enhance the robustness of target classifiers by leveraging discovered domain information.
• To improve the alignment of feature representations across domains.

Main Methods:

• A novel deep architecture with a side branch for automatic sample-to-latent-domain assignment.
• Specialized layers that utilize domain membership to align CNN internal feature representations.
• Evaluation on publicly available benchmarks to assess performance against existing UDA methods.

Main Results:

• The proposed architecture successfully discovers latent domains within visual datasets.
• The method demonstrates superior performance compared to state-of-the-art Unsupervised Domain Adaptation techniques.
• Robust target classifiers are learned by effectively exploiting domain membership information.

Conclusions:

• The novel deep architecture effectively addresses the challenges of multi-domain Unsupervised Domain Adaptation.
• Automatic latent domain discovery is a viable strategy for improving adaptation performance.
• This approach offers a significant advancement for learning in scenarios with unlabeled target data.