Combination of Vector Quantization and Visualization

  • Authors:
  • Olga Kurasova;Alma Molytė

  • Affiliations:
  • Institute of Mathematics and Informatics, Vilnius, Lithuania 08663 and Vilnius Pedagogical University, Vilnius, Lithuania 08106;Institute of Mathematics and Informatics, Vilnius, Lithuania 08663

  • Venue:
  • MLDM '09 Proceedings of the 6th International Conference on Machine Learning and Data Mining in Pattern Recognition
  • Year:
  • 2009

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Abstract

In this paper, we present a comparative analysis of a combination of two vector quantization methods (self-organizing map and neural gas), based on a neural network and multidimensional scaling that is used for visualization of codebook vectors obtained by vector quantization methods. The dependence of computing time on the number of neurons, the ratio between the number of neuron-winners and that of all neurons, quantization and mapping qualities, and preserving of a data structure in the mapping image are investigated.