Nonlinear system identification: From multiple-model networks to Gaussian processes

  • Authors:
  • Gregor Gregorčič;Gordon Lightbody

  • Affiliations:
  • AVL List GMBH, Hans-List-Platz 1, A-8020 Graz, Austria;Department of Electrical Engineering, University College Cork, Ireland

  • Venue:
  • Engineering Applications of Artificial Intelligence
  • Year:
  • 2008

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Abstract

Neural networks have been widely used to model nonlinear systems for control. The curse of dimensionality and lack of transparency of such neural network models has forced a shift towards local model networks and recently towards the nonparametric Gaussian processes approach. Assuming common validity functions, all of these models have a similar structure. This paper examines the evolution from the radial basis function network to the local model network and finally to the Gaussian process model. A simulated example is used to explain the advantages and disadvantages of each structure.