A Method for the Improvement of the Behavior of Bidirectional Associative Memories as Pattern Classifiers

  • Authors:
  • Francisco J. López-Aligué;Ignacio Alvarez-Troncoso;M. Isabel Acevedo-Sotoca;Carlos J. García-Orellana;Miguel Macías-Macías

  • Affiliations:
  • Department of Electronics and Electromechanical Engineering, Faculty of Sciences, University of Extremadura, Avda. de Elvas, s/n. 06007 Badajoz, Spain;Department of Electronics and Electromechanical Engineering, Faculty of Sciences, University of Extremadura, Avda. de Elvas, s/n. 06007 Badajoz, Spain;Department of Electronics and Electromechanical Engineering, Faculty of Sciences, University of Extremadura, Avda. de Elvas, s/n. 06007 Badajoz, Spain;Department of Electronics and Electromechanical Engineering, Faculty of Sciences, University of Extremadura, Avda. de Elvas, s/n. 06007 Badajoz, Spain;Department of Electronics and Electromechanical Engineering, Faculty of Sciences, University of Extremadura, Avda. de Elvas, s/n. 06007 Badajoz, Spain

  • Venue:
  • Neural Processing Letters
  • Year:
  • 2003

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Abstract

We present a form of attaining success levels of up to 100% in character classification by the appropriate use of thresholds in the activity functions of the neurons making up the two-layer network with which bidirectional associative memories are implemented, together with a systematic method for generating the weight matrix. The system that is constructed includes a geometrical pre-processing stage that eliminates distortions, thereby improving the results. As a final characteristic, the functioning of the system presents a high level of immunity to noise or deformations. The system was evaluated using the two popular databases NIST#19 and UCI. There was found to be no misclassification in any case, whether under conditions of heavy contamination from noise or distortion of the image to be classified.