Dissimilarity representations allow for building good classifiers

  • Authors:
  • Elzbieta Pekalska;Robert P. W. Duin

  • Affiliations:
  • Pattern Recognition Group, Laboratory of Applied Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands;Pattern Recognition Group, Laboratory of Applied Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2002

Quantified Score

Hi-index 0.10

Visualization

Abstract

In this paper, a classification task on dissimilarity representations is considered. A traditional way to discriminate between objects represented by dissimilarities is the nearest neighbor method. It suffers, however, from a number of limitations, i.e., high computational complexity, a potential loss of accuracy when a small set of prototypes is used and sensitivity to noise. To overcome these shortcomings, we propose to use a normal density-based classifier constructed on the same representation. We show that such a classifier, based on a weighted combination of dissimilarities, can significantly improve the nearest neighbor rule with respect to the recognition accuracy and computational effort.