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Registrar: a complete-memory operator to enhance performance of genetic algorithms

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dc.contributor.author Charalampakis, AE en
dc.date.accessioned 2014-03-01T11:46:29Z
dc.date.available 2014-03-01T11:46:29Z
dc.date.issued 2011 en
dc.identifier.issn 09255001 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/37947
dc.subject Evolutionary algorithms en
dc.subject Genetic algorithms en
dc.subject Memory en
dc.title Registrar: a complete-memory operator to enhance performance of genetic algorithms en
heal.type other en
heal.identifier.primary 10.1007/s10898-011-9770-6 en
heal.identifier.secondary http://dx.doi.org/10.1007/s10898-011-9770-6 en
heal.publicationDate 2011 en
heal.abstract We examine the concept of storing all evaluated chromosomes and directly reuse them in Genetic Algorithms (GAs). This is achieved by a fully encapsulated operator, called Registrar, which is effortlessly placed between the GA and the objective function. The Registrar does not approximate the objective function. Instead, it replaces the chromosomes requested by the GA with similar ones taken from the registry, bypassing the function evaluation. Unlike other methods that use external memory to increase genetic diversity, our simple implementation encourages revisits in order to avoid evaluations in an aggressive manner. Significant increase in performance is observed which is present even at the early stages of evolution, in accordance with the Birthday Problem of probability theory. Implementation with Standard GA shows great promise, while the encapsulation of the code facilitates implementation with other Evolutionary Algorithms. © 2011 Springer Science+Business Media, LLC. en
heal.journalName Journal of Global Optimization en
dc.identifier.doi 10.1007/s10898-011-9770-6 en
dc.identifier.spage 1 en
dc.identifier.epage 35 en


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