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1、中国石油大学（华东）本科毕业设计（论文）外文翻译21中国石油大学（华东）本科毕业设计（论文）外文翻译英文资料Evolutionofastrategyforshipguidanceusingtwoimplementationsofgeneticprogramming1.TheprincipleofgeneticalgorithmAgeneticalgorithm(GA)isasearchtechniqueusedincomputingtofindexactorapproximatesolutionstooptimiza
2、tionandsearchproblems.Geneticalgorithmsarecategorizedasglobalsearchheuristics.Geneticalgorithmsareaparticularclassofevolutionaryalgorithms(EA)thatusetechniquesinspiredbyevolutionarybiologysuchasinheritance,mutation,selection,andcrossover(alsocalledrecombination
3、).Geneticalgorithmsareimplementedinacomputersimulationinwhichapopulationofabstractrepresentations(calledchromosomesorthegenotypeofthegenome)ofcandidatesolutions(calledindividuals,creatures,orphenotypes)toanoptimizationproblemevolvestowardbettersolutions.Traditi
4、onally,solutionsarerepresentedinbinaryasstringsof0sand1s,butotherencodingsarealsopossible.Theevolutionusuallystartsfromapopulationofrandomlygeneratedindividualsandhappensingenerations.Ineachgeneration,thefitnessofeveryindividualinthepopulationisevaluated,multip
5、leindividualsarestochasticallyselectedfromthecurrentpopulation(basedontheirfitness),andmodified(recombinedandpossiblyrandomlymutated)toformanewpopulation.Thenewpopulationisthenusedinthenextiterationofthealgorithm.Commonly,thealgorithmterminateswheneitheramaximu
6、mnumberofgenerationshasbeenproduced,orasatisfactoryfitnesslevelhasbeenreachedforthepopulation.Ifthealgorithmhasterminatedduetoamaximumnumberof21中国石油大学（华东）本科毕业设计（论文）外文翻译generations,asatisfactorysolutionmayormaynothavebeenreached.Geneticalgorithmsfindapplicationi
7、nbioinformatics,genetics,computationalscience,engineering,economics,chemistry,manufacturing,mathematics,physicsandotherfields.Astandardrepresentationofthesolutionisasanarrayofbits.Arraysofothertypesandstructurescanbeusedinessentiallythesameway.Themainpropertyth
8、atmakesthesegeneticrepresentationsconvenientisthattheirpartsareeasilyalignedduetotheirfixedsize,whichfacilitatessimplecrossoveroperations.Variablelengthrepresentationsmayals
