Investigating scaling of an abstracted LCS utilising ternary and s-expression alphabets

  • Authors:
  • Will N. Browne;Charalambos Ioannides

  • Affiliations:
  • University of Reading, Reading, United Kingdom;University of Reading, Reading, United Kingdom

  • Venue:
  • Proceedings of the 9th annual conference companion on Genetic and evolutionary computation
  • Year:
  • 2007

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Abstract

Utilising the expressive power of S-Expressions in Learning Classifier Systems often prohibitively increases the search space due to increased flexibility over the ternary alphabet. Selection of appropriate S-Expressions functions through domain knowledge improves scaling, as expected. Considering the Cognitive Systems roots, abstraction was included in LCS - episodic learning generalises prior to abstraction for semantic learning. This novel method is shown to provide compact results (135-MUX) and exhibits potential for scaling well (1034-MUX).