2009 Special Issue: Integrated feature and parameter optimization for an evolving spiking neural network: Exploring heterogeneous probabilistic models

  • Authors:
  • Stefan Schliebs;Michaël Defoin-Platel;Sue Worner;Nikola Kasabov

  • Affiliations:
  • Knowledge Engineering and Discovery Research Institute (KEDRI), Auckland University of Technology, New Zealand;Biomathematics and Bioinformatics at Rothamsted Research, United Kingdom;Lincoln University, Centre for Bioprotection, New Zealand;Knowledge Engineering and Discovery Research Institute (KEDRI), Auckland University of Technology, New Zealand

  • Venue:
  • Neural Networks
  • Year:
  • 2009

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Abstract

This study introduces a quantum-inspired spiking neural network (QiSNN) as an integrated connectionist system, in which the features and parameters of an evolving spiking neural network are optimized together with the use of a quantum-inspired evolutionary algorithm. We propose here a novel optimization method that uses different representations to explore the two search spaces: A binary representation for optimizing feature subsets and a continuous representation for evolving appropriate real-valued configurations of the spiking network. The properties and characteristics of the improved framework are studied on two different synthetic benchmark datasets. Results are compared to traditional methods, namely a multi-layer-perceptron and a naive Bayesian classifier (NBC). A previously used real world ecological dataset on invasive species establishment prediction is revisited and new results are obtained and analyzed by an ecological expert. The proposed method results in a much faster convergence to an optimal solution (or a close to it), in a better accuracy, and in a more informative set of features selected.