Discovering Latent Domains for Multisource Domain Adaptation

Judy Hoffman^{1, 2}, Brian Kulis⁴, Trevor Darrell^{1, 2}, and Kate Saenko^{1, 2, 3}

¹UC Berkeley, EECS, Berkeley, California, USA
jhoffman@eecs.berkeley.edu
trevor@eecs.berkeley.edu
saenko@eecs.berkeley.edu

²ICSI, Berkeley, California, USA

³Harvard University, Cambridge, Massachusetts, USA

⁴Ohio State University, Columbus, Ohio, USA
kulis@cse.ohio-state.edu

Abstract. Recent domain adaptation methods successfully learn cross-domain transforms to map points between source and target domains. Yet, these methods are either restricted to a single training domain, or assume that the separation into source domains is known a priori. However, most available training data contains multiple unknown domains. In this paper, we present both a novel domain transform mixture model which outperforms a single transform model when multiple domains are present, and a novel constrained clustering method that successfully discovers latent domains. Our discovery method is based on a novel hierarchical clustering technique that uses available object category information to constrain the set of feasible domain separations. To illustrate the effectiveness of our approach we present experiments on two commonly available image datasets with and without known domain labels: in both cases our method outperforms baseline techniques which use no domain adaptation or domain adaptation methods that presume a single underlying domain shift.

LNCS 7573, p. 702 ff.

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