Untidy Evolution: Evolving Messy Gates for Fault Tolerance

  • Authors:
  • Julian F. Miller;Morten Hartmann

  • Affiliations:
  • -;-

  • Venue:
  • ICES '01 Proceedings of the 4th International Conference on Evolvable Systems: From Biology to Hardware
  • Year:
  • 2001

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Abstract

The exploitation of the physical characteristics has already been demonstrated in the intrinsic evolution of electronic circuits. This paper is an initial attempt at creating a world in which "physics" can be exploited in simulation. As a starting point we investigate a model of gate-like components with added noise. We refer to this as a kind of messiness. The principal idea behind these messy gates is that artificial evolution makes a virtue of the untidiness. We are ultimately trying to study the question: What kind of components should we use in artificial evolution? Several experiments are described that show that the messy circuits have a natural robustness to noise, as well as an implicit faulttolerance. In addition, it was relatively easy for evolution to generate novel circuits that were surprisingly efficient.