Class UnitBallSampler.UnitBallSamplerND
- java.lang.Object
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- org.apache.commons.rng.sampling.shape.UnitBallSampler
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- org.apache.commons.rng.sampling.shape.UnitBallSampler.UnitBallSamplerND
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- All Implemented Interfaces:
ObjectSampler<double[]>
,SharedStateObjectSampler<double[]>
,SharedStateSampler<SharedStateObjectSampler<double[]>>
- Enclosing class:
- UnitBallSampler
private static final class UnitBallSampler.UnitBallSamplerND extends UnitBallSampler
Sample using ball point picking.- See Also:
- Ball point picking
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Field Summary
Fields Modifier and Type Field Description private int
dimension
The dimension.private ContinuousSampler
exp
The exponential distribution (mean=1).private NormalizedGaussianSampler
normal
The standard normal distribution.
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Constructor Summary
Constructors Constructor Description UnitBallSamplerND(UniformRandomProvider rng, int dimension)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description double[]
sample()
Create an object sample.UnitBallSampler
withUniformRandomProvider(UniformRandomProvider rng)
Create a new instance of the sampler with the same underlying state using the given uniform random provider as the source of randomness.-
Methods inherited from class org.apache.commons.rng.sampling.shape.UnitBallSampler
of
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.commons.rng.sampling.ObjectSampler
samples, samples
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Field Detail
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dimension
private final int dimension
The dimension.
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normal
private final NormalizedGaussianSampler normal
The standard normal distribution.
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exp
private final ContinuousSampler exp
The exponential distribution (mean=1).
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Constructor Detail
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UnitBallSamplerND
UnitBallSamplerND(UniformRandomProvider rng, int dimension)
- Parameters:
rng
- Source of randomness.dimension
- Space dimension.
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Method Detail
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sample
public double[] sample()
Description copied from interface:ObjectSampler
Create an object sample.- Specified by:
sample
in interfaceObjectSampler<double[]>
- Specified by:
sample
in classUnitBallSampler
- Returns:
- a random Cartesian coordinate within the unit n-ball.
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withUniformRandomProvider
public UnitBallSampler withUniformRandomProvider(UniformRandomProvider rng)
Description copied from class:UnitBallSampler
Create a new instance of the sampler with the same underlying state using the given uniform random provider as the source of randomness.- Specified by:
withUniformRandomProvider
in interfaceSharedStateSampler<SharedStateObjectSampler<double[]>>
- Specified by:
withUniformRandomProvider
in classUnitBallSampler
- Parameters:
rng
- Generator of uniformly distributed random numbers.- Returns:
- the sampler
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