Clustering of volcanic ash arising from different fragmentation mechanisms using Kohonen self-organizing maps

  • Authors:
  • Orkun Ersoy;Erkan Aydar;Alain Gourgaud;Harun Artuner;Hasan Bayhan

  • Affiliations:
  • Department of Geological Engineering, Hacettepe University, 06532, Beytepe-Ankara, Turkey and Universitè Blaise Pascal, UMR-CNRS 6524, 5 rue Kessler, 63038 Clermont-Ferrand, France;Department of Geological Engineering, Hacettepe University, 06532, Beytepe-Ankara, Turkey;Universitè Blaise Pascal, UMR-CNRS 6524, 5 rue Kessler, 63038 Clermont-Ferrand, France;Department of Computer Science & Engineering, Hacettepe University, 06532, Beytepe-Ankara, Turkey;Department of Geological Engineering, Hacettepe University, 06532, Beytepe-Ankara, Turkey

  • Venue:
  • Computers & Geosciences
  • Year:
  • 2007

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Abstract

In this study, we present the visualization and clustering capabilities of self-organizing maps (SOM) for analyzing high-dimensional data. We used SOM because they implement an orderly mapping of a high-dimensional distribution onto a regular low-dimensional grid. We used surface texture parameters of volcanic ash that arose from different fragmentation mechanisms as input data. We found that SOM cluster 13-dimensional data more accurately than conventional statistical classifiers. The component planes constructed by SOM are more successful than statistical tests in determining the distinctive parameters.