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java.lang.ObjectOperator.Operations.SelectionOperation
Operator.Operations.RouletteWheel
public abstract class RouletteWheel
This is an abstract class for creating Roulette wheel selection methods with different distributions
Field Summary | |
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protected double[] |
accProbs
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protected double |
minFit
|
protected RandomNumberGenerator |
rng
|
protected boolean |
smallFit
|
protected double |
sumFit
|
Fields inherited from class Operator.Operations.SelectionOperation |
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selectedPopulation, size |
Constructor Summary | |
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RouletteWheel()
New instance |
|
RouletteWheel(int size,
RandomNumberGenerator rng)
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Method Summary | |
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protected abstract void |
calculateAccumulatedFitnessProbabilities(java.util.List<Individual> operands)
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protected void |
calculateFitnessSum(java.util.List<Individual> c)
Calculate the fitness sum. |
void |
doOperation(Individual operand)
Performs the operation on an operand |
void |
doOperation(java.util.List<Individual> operands)
Performs the operation on the list passed |
RandomNumberGenerator |
getRNG()
Get the number generator |
void |
rankPopulation(java.util.List<Individual> operands)
Rank the population |
void |
setProperties(java.util.Properties p)
Set properties |
void |
setRNG(RandomNumberGenerator m)
Set the number generator |
protected void |
spinRoulette(java.util.List<Individual> operands)
Selects Indivudals from operand and adds to the selected population until the selected population is full. |
Methods inherited from class Operator.Operations.SelectionOperation |
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getSelectedPopulation, getSize |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected RandomNumberGenerator rng
protected double minFit
protected double sumFit
protected boolean smallFit
protected double[] accProbs
Constructor Detail |
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public RouletteWheel(int size, RandomNumberGenerator rng)
public RouletteWheel()
Method Detail |
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public void setProperties(java.util.Properties p)
SelectionOperation
setProperties
in interface ParameterI
setProperties
in class SelectionOperation
p
- object containing propertiespublic void doOperation(Individual operand)
Operation
doOperation
in interface Operation
doOperation
in class SelectionOperation
operand
- operand to perform operation onpublic void doOperation(java.util.List<Individual> operands)
Operation
doOperation
in interface Operation
doOperation
in class SelectionOperation
operands
- operands to be operated onpublic void rankPopulation(java.util.List<Individual> operands)
operands
- populationprotected void spinRoulette(java.util.List<Individual> operands)
operands
- Individuals to be chosen formprotected abstract void calculateAccumulatedFitnessProbabilities(java.util.List<Individual> operands)
protected void calculateFitnessSum(java.util.List<Individual> c)
c
- List of individuals which fitness is taken into accountpublic RandomNumberGenerator getRNG()
Stochastic
getRNG
in interface Stochastic
public void setRNG(RandomNumberGenerator m)
Stochastic
setRNG
in interface Stochastic
m
- number generator
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