Feature-based dissimilarity space classification

Authors:
Robert P. W. Duin;Marco Loog;Elżbieta Pekalska;David M. J. Tax
Affiliations:
Faculty of Electrical Engineering, Mathematics and Computer Sciences, Delft University of Technology, The Netherlands;Faculty of Electrical Engineering, Mathematics and Computer Sciences, Delft University of Technology, The Netherlands;School of Computer Science, University of Manchester, United Kingdom;Faculty of Electrical Engineering, Mathematics and Computer Sciences, Delft University of Technology, The Netherlands
Venue:
ICPR'10 Proceedings of the 20th International conference on Recognizing patterns in signals, speech, images, and videos
Year:
2010

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Abstract

General dissimilarity-based learning approaches have been proposed for dissimilarity data sets [1,2]. They often arise in problems in which direct comparisons of objects are made by computing pairwise distances between images, spectra, graphs or strings. Dissimilarity-based classifiers can also be defined in vector spaces [3]. A large comparative study has not been undertaken so far. This paper compares dissimilarity-based classifiers with traditional feature-based classifiers, including linear and nonlinear SVMs, in the context of the ICPR 2010 Classifier Domains of Competence contest. It is concluded that the feature-based dissimilarity space classification performs similar or better than the linear and nonlinear SVMs, as averaged over all 301 datasets of the contest and in a large subset of its datasets. This indicates that these classifiers have their own domain of competence.