Improved SOM learning using simulated annealing

  • Authors:
  • Antonino Fiannaca;Giuseppe Di Fatta;Salvatore Gaglio;Riccardo Rizzo;Alfonso M. Urso

  • Affiliations:
  • ICAR-CNR, Consiglio Nazionale delle Ricerche, Palermo, Italy;School of Systems Engineering, Univeristy of Reading, UK;ICAR-CNR, Consiglio Nazionale delle Ricerche, Palermo, Italy and Dipartimento di Ingegneria Informatica, Universitá di Palermo, Italy;ICAR-CNR, Consiglio Nazionale delle Ricerche, Palermo, Italy;ICAR-CNR, Consiglio Nazionale delle Ricerche, Palermo, Italy

  • Venue:
  • ICANN'07 Proceedings of the 17th international conference on Artificial neural networks
  • Year:
  • 2007

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Abstract

Self-Organizing Map (SOM) algorithm has been extensively used for analysis and classification problems. For this kind of problems, datasets become more and more large and it is necessary to speed up the SOM learning. In this paper we present an application of the Simulated Annealing (SA) procedure to the SOM learning algorithm. The goal of the algorithm is to obtain fast learning and better performance in terms of matching of input data and regularity of the obtained map. An advantage of the proposed technique is that it preserves the simplicity of the basic algorithm. Several tests, carried out on different large datasets, demonstrate the effectiveness of the proposed algorithm in comparison with the original SOM and with some of its modification introduced to speed-up the learning.