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Kernel-based Distance Metric Learning in the Output Space

TitleKernel-based Distance Metric Learning in the Output Space
Publication TypeConference Paper
Year of Publication2013
AuthorsLi C, Georgiopoulos M, Anagnostopoulos GC
Conference NameProceedings of the IEEE-INNS-ENNS International Joint Conference on Neural Networks (IJCNN)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Conference LocationDallas, Texas, USA

In this paper we present two related, kernel-based Distance Metric Learning (DML) methods. Their respective models non-linearly map data from their original space to an output space, and subsequent distance measurements are performed in the output space via a Mahalanobis metric. The dimensionality of the output space can be directly controlled to facilitate the learning of a low-rank metric. Both methods allow for simultaneous inference of the associated metric and the mapping to the output space, which can be used to visualize the data, when the output space is 2-or 3-dimensional. Experimental results for a collection of classification tasks illustrate the advantages of the proposed methods over other traditional and kernel-based DML approaches.


Nominated for Best Paper Award.

Acceptance rate 72% (435/605).


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