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eaLib API Docs Last Modified : January 7 2002 |
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java.lang.Object | +--mss.ea.core.GeneticOperator | +--mss.ea.eval.FitnessScaling | +--mss.ea.eval.NonLinearRankingScaling
Nonlinear fitness scaling based on rank of individual. Die Skalierung wird in der Form Fitness(pos) = (n * x^(pos - 1)) / (sum(i=1..n) x^(i-1)) berechnet. x ergibt sich aus der Lösung des Polynoms Dabei sind : sp - Selektionsdruck, pos - Position (Rang) des Individuums, n - Populationsgröße Als Randbedingung gilt weiterhin Position(bestes Individuum) = n und Position(bestes Individuum) = 1.
Fields inherited from class mss.ea.core.GeneticOperator |
description, ID, name |
Constructor Summary | |
NonLinearRankingScaling()
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Method Summary | |
Fitness |
evaluate(Individual ind)
Evaluates the fitness of an individual. |
Methods inherited from class mss.ea.eval.FitnessScaling |
process |
Methods inherited from class mss.ea.core.GeneticOperator |
getDescription, getID, getName, toString |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface mss.ea.core.StreamProcessor |
getName |
Constructor Detail |
public NonLinearRankingScaling()
Method Detail |
public Fitness evaluate(Individual ind)
FitnessScaling
evaluate
in class FitnessScaling
mss.ea.eval.FitnessScaling
i
- individual for evaluationFitnessScalingException
- in case the evaluation fails
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eaLib API Docs Last Modified : January 7 2002 |
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