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arXiv · 2208.00898

Joint covariate-alignment and concept-alignment: a framework for domain generalization

Thuan Nguyen·Boyang Lyu·Prakash Ishwar·Matthias Scheutz·Shuchin Aeron
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Abstract

In this paper, we propose a novel domain generalization (DG) framework based on a new upper bound to the risk on the unseen domain. Particularly, our framework proposes to jointly minimize both the covariate-shift as well as the concept-shift between the seen domains for a better performance on the unseen domain. While the proposed approach can be implemented via an arbitrary combination of covariate-alignment and concept-alignment modules, in this work we use well-established approaches for distributional alignment namely, Maximum Mean Discrepancy (MMD) and covariance Alignment (CORAL), and use an Invariant Risk Minimization (IRM)-based approach for concept alignment. Our numerical results show that the proposed methods perform as well as or better than the state-of-the-art for domain generalization on several data sets.

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Thuan Nguyen, Boyang Lyu, Prakash Ishwar, Matthias Scheutz, Shuchin Aeron. 2022-08-01. Joint covariate-alignment and concept-alignment: a framework for domain generalization. https://arxiv.org/abs/2208.00898

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