The Architecture and Performance of a Stochastic CompetitiveEvolutionary Neural Tree Network

  • Authors:
  • N. Davey;R. G. Adams;S. J. George

  • Affiliations:
  • Faculty of Engineering and Information Sciences, University of Hertfordshire, Hatfield, Herts., AL10 9AB, UK. n.davey@herts.ac.uk;Faculty of Engineering and Information Sciences, University of Hertfordshire, Hatfield, Herts., AL10 9AB, UK. r.g.adams@herts.ac.uk;Faculty of Engineering and Information Sciences, University of Hertfordshire, Hatfield, Herts., AL10 9AB, UK. s.j.george@herts.ac.uk

  • Venue:
  • Applied Intelligence
  • Year:
  • 2000

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Abstract

A new dynamic tree structured network—the StochasticCompetitive Evolutionary Neural Tree (SCENT) is introduced. Thenetwork is able to provide a hierarchical classification ofunlabelled data sets. The main advantage that SCENT offers over otherhierarchical competitive networks is its ability to self-determinethe number and structure of the competitive nodes in the networkwithout the need for externally set parameters. The network producesstable classificatory structures by halting its growth using locallycalculated, stochastically controlled, heuristics. The performance ofthe network is analysed by comparing its results with that of a goodnon-hierarchical clusterer, and with three other hierarchicalclusterers and its non stochastic predecessor. SCENT's classificatorycapabilities are demonstrated by its ability to produce arepresentative hierarchical structure to classify a broad range ofdata sets.