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Analysis of Recombinative Algorithms on a Non-Separable Building-Block Problem

Analysis of Recombinative Algorithms on a Non-Separable Building-Block Problem
Analysis of Recombinative Algorithms on a Non-Separable Building-Block Problem
Evolution by natural selection is a process of variation and selection acting on replicating units. These units are often assumed to be individuals, but in a sexual population, the largest reliably-replicated unit on which selection can act is a small section of chromosome – hence, the ‘selfish gene’ model. However, the scale of unit at which variation by spontaneous mutation occurs is different from the scale of unit at which variation by recombination occurs. I suggest that the action of recombinative variation and mutational variation together can enable local optimization to occur at two different scales simultaneously. I adapt a recent model illustrating a benefit of sexual recombination to illustrate conditions for two scales of optimization in natural populations, and show that the operation of natural selection in this scenario cannot be understood by considering either scale alone.
69-90
Morgan Kaufmann
Watson, Richard A.
ce199dfc-d5d4-4edf-bd7b-f9e224c96c75
Martin, Worthy N.
Spears, William M.
Watson, Richard A.
ce199dfc-d5d4-4edf-bd7b-f9e224c96c75
Martin, Worthy N.
Spears, William M.

Watson, Richard A. (2001) Analysis of Recombinative Algorithms on a Non-Separable Building-Block Problem In, Martin, Worthy N. and Spears, William M. (eds.) Foundations of Genetic Algorithms, Volume 6. Morgan Kaufmann pp. 69-90.

Record type: Book Section

Abstract

Evolution by natural selection is a process of variation and selection acting on replicating units. These units are often assumed to be individuals, but in a sexual population, the largest reliably-replicated unit on which selection can act is a small section of chromosome – hence, the ‘selfish gene’ model. However, the scale of unit at which variation by spontaneous mutation occurs is different from the scale of unit at which variation by recombination occurs. I suggest that the action of recombinative variation and mutational variation together can enable local optimization to occur at two different scales simultaneously. I adapt a recent model illustrating a benefit of sexual recombination to illustrate conditions for two scales of optimization in natural populations, and show that the operation of natural selection in this scenario cannot be understood by considering either scale alone.

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Published date: 2001
Organisations: Agents, Interactions & Complexity

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Local EPrints ID: 262007
URI: http://eprints.soton.ac.uk/id/eprint/262007
PURE UUID: 742f9487-2237-49d6-b63c-fc45233afca1

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Date deposited: 21 Feb 2006
Last modified: 18 Jul 2017 08:56

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Contributors

Editor: Worthy N. Martin
Editor: William M. Spears

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