IT-RUDA: Information Theory Assisted Robust Unsupervised Domain Adaptation

Shima Rashidi; Ruwan Tennakoon; Aref Miri Rekavandi; Papangkorn Jessadatavornwong; Amanda Freis; Garret Huff; Mark Easton; Adrian Mouritz; Reza Hoseinnezhad; Alireza Bab-Hadiashar

arXiv · 2210.12947

IT-RUDA: Information Theory Assisted Robust Unsupervised Domain Adaptation

Shima Rashidi·Ruwan Tennakoon·Aref Miri Rekavandi·Papangkorn Jessadatavornwong·Amanda Freis·Garret Huff·Mark Easton·Adrian Mouritz·Reza Hoseinnezhad·Alireza Bab-Hadiashar

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Abstract

Distribution shift between train (source) and test (target) datasets is a common problem encountered in machine learning applications. One approach to resolve this issue is to use the Unsupervised Domain Adaptation (UDA) technique that carries out knowledge transfer from a label-rich source domain to an unlabeled target domain. Outliers that exist in either source or target datasets can introduce additional challenges when using UDA in practice. In this paper, $\alpha$-divergence is used as a measure to minimize the discrepancy between the source and target distributions while inheriting robustness, adjustable with a single parameter $\alpha$, as the prominent feature of this measure. Here, it is shown that the other well-known divergence-based UDA techniques can be derived as special cases of the proposed method. Furthermore, a theoretical upper bound is derived for the loss in the target domain in terms of the source loss and the initial $\alpha$-divergence between the two domains. The robustness of the proposed method is validated through testing on several benchmarked datasets in open-set and partial UDA setups where extra classes existing in target and source datasets are considered as outliers.

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Shima Rashidi, Ruwan Tennakoon, Aref Miri Rekavandi, Papangkorn Jessadatavornwong, Amanda Freis, Garret Huff, Mark Easton, Adrian Mouritz, Reza Hoseinnezhad, Alireza Bab-Hadiashar. 2022-10-24. IT-RUDA: Information Theory Assisted Robust Unsupervised Domain Adaptation. https://arxiv.org/abs/2210.12947

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