Learning Semi-Supervised Nonlinear Embeddings for Domain-Adaptive Pattern Recognition


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VURAL E.

International Conference on Advanced Technologies, Computer Engineering and Science (ICATCES 2019), Antalya, Alanya, Turkey, 26 - 28 April 2019, pp.295-299

  • Publication Type: Conference Paper / Full Text
  • City: Antalya, Alanya
  • Country: Turkey
  • Page Numbers: pp.295-299

Abstract

We study the problem of learning nonlinear data embeddings in order to obtain representations for efficient and domain-invariant recognition of visual patterns. Given observations of a training set of patterns from different classes in two different domains, we propose a method to learn a nonlinear mapping of the data samples from different domains into a common domain. The nonlinear mapping is learnt such that the class means of different domains are mapped to nearby points in the common domain in order to appropriately align the two domains. Meanwhile, unlabeled samples are also used in the computation of the embedding via an objective term representing the preservation of the global geometry of the data. Along with the mapping of the training points, we also learn a linear classifier in the common domain, which allows an accurate estimation of the unknown class labels. We  evaluate the performance of the proposed algorithm in domain-adaptive face and object recognition experiments. Experimental results show that the proposed method yields quite promising performance, outperforming baseline domain adaptation methods.