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A Building-Block Royal Road Where Crossover is Provably Essential

Watson, Richard A. and Jansen, Thomas, Thierens, Dirk and Lipson, Hod(eds.) (2007) A Building-Block Royal Road Where Crossover is Provably Essential Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2007), pp. 1452-1459.

Record type: Article


One of the most controversial yet enduring hypotheses about what genetic algorithms (GAs) are good for concerns the idea that GAs process building-blocks. More specifically, it has been suggested that crossover in GAs can assemble short low-order schemata of above average fitness (building blocks) to create higher-order higher-fitness schemata. However, there has been considerable difficulty in demonstrating this rigorously and intuitively. Here we provide a simple building-block function that a GA with two-point crossover can solve on average in polynomial time, whereas an asexual population or mutation hill-climber cannot.

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Published date: July 2007
Organisations: Agents, Interactions & Complexity


Local EPrints ID: 264283
PURE UUID: e69690c3-c460-482a-866c-cb4a32ea39c3

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Date deposited: 07 Jul 2007
Last modified: 18 Jul 2017 07:37

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Author: Thomas Jansen
Editor: Dirk Thierens
Editor: Hod Lipson

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