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- W4286973348 abstract "We consider unsupervised domain adaptation (UDA) for classification problems in the presence of missing data in the unlabelled target domain. More precisely, motivated by practical applications, we analyze situations where distribution shift exists between domains and where some components are systematically absent on the target domain without available supervision for imputing the missing target components. We propose a generative approach for imputation. Imputation is performed in a domain-invariant latent space and leverages indirect supervision from a complete source domain. We introduce a single model performing joint adaptation, imputation and classification which, under our assumptions, minimizes an upper bound of its target generalization error and performs well under various representative divergence families (H-divergence, Optimal Transport). Moreover, we compare the target error of our Adaptation-imputation framework and the ideal target error of a UDA classifier without missing target components. Our model is further improved with self-training, to bring the learned source and target class posterior distributions closer. We perform experiments on three families of datasets of different modalities: a classical digit classification benchmark, the Amazon product reviews dataset both commonly used in UDA and real-world digital advertising datasets. We show the benefits of jointly performing adaptation, classification and imputation on these datasets." @default.
- W4286973348 created "2022-07-25" @default.
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- W4286973348 date "2021-09-16" @default.
- W4286973348 modified "2023-09-27" @default.
- W4286973348 title "Unsupervised domain adaptation with non-stochastic missing data" @default.
- W4286973348 doi "https://doi.org/10.48550/arxiv.2109.09505" @default.
- W4286973348 hasPublicationYear "2021" @default.
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