org.apache.spark.util.random

Class BernoulliSampler<T>

Object

org.apache.spark.util.random.BernoulliSampler<T>

All Implemented Interfaces:

java.io.Serializable, Cloneable, Pseudorandom, RandomSampler<T,T>

public class BernoulliSampler<T>
extends Object
implements RandomSampler<T,T>

:: DeveloperApi :: A sampler based on Bernoulli trials.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BernoulliSampler(double lb, double ub, boolean complement, java.util.Random random)
BernoulliSampler(double ratio, java.util.Random random)

Method Summary

Methods

Modifier and Type	Method and Description
BernoulliSampler<T>	clone()
BernoulliSampler<T>	cloneComplement() Return a sampler with is the complement of the range specified of the current sampler.
scala.collection.Iterator<T>	sample(scala.collection.Iterator<T> items) take a random sample
void	setSeed(long seed) Set random seed.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BernoulliSampler

public BernoulliSampler(double lb,
                double ub,
                boolean complement,
                java.util.Random random)

BernoulliSampler

public BernoulliSampler(double ratio,
                java.util.Random random)

Method Detail

setSeed

public void setSeed(long seed)

Description copied from interface: Pseudorandom

Set random seed.

Specified by:

setSeed in interface Pseudorandom

sample

public scala.collection.Iterator<T> sample(scala.collection.Iterator<T> items)

Description copied from interface: RandomSampler

take a random sample

Specified by:

sample in interface RandomSampler<T,T>

cloneComplement

public BernoulliSampler<T> cloneComplement()

Return a sampler with is the complement of the range specified of the current sampler.

clone

public BernoulliSampler<T> clone()

Specified by:

clone in interface RandomSampler<T,T>

Overrides:

clone in class Object