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Sexual and Asexual Paradigms in Evolution: The Implications for Genetic Algorithms

Summary: Sexual and Asexual Paradigms in Evolution:
The Implications for Genetic Algorithms
No Author Given
No Institute Given
Abstract. In this paper, we consider the role of sexual and asexual re-
production in evolution and relate this to the issue of optimization with
genetic algorithms. In particular, we examine the results and analyses
provided by [1] that imply that sexual reproduction has a general advan-
tage over asexual reproduction. We generalize the class of models beyond
those considered in [1] while still maintaining their analytical tractabil-
ity. With this, we are then able to provide a more qualified description of
when and why sexual-recombination can exceed mutation-based meth-
ods, and vice versa.
1 Introduction
In [1], MacKay has reported an advantage for evolutionary strategies that are
based on sexual, rather than asexual, reproduction methods. MacKay compared
systems that evolve by genetic recombination to ones that evolve by random
mutations alone. He reports consistently faster rates of convergence to optimal
fitness levels in systems based on recombination. In addition, MacKay reports
that the rate of information acquired through natural selection is always greater


Source: Andrews, Mark W. - Department of Cognitive, Perceptual and Brain Sciences, University College London


Collections: Computer Technologies and Information Sciences