org.apache.spark.util.random

Class BernoulliCellSampler<T>

Object

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

Type Parameters:

T - item type

All Implemented Interfaces:

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

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

:: DeveloperApi :: A sampler based on Bernoulli trials for partitioning a data sequence.

param: lb lower bound of the acceptance range param: ub upper bound of the acceptance range param: complement whether to use the complement of the range specified, default to false

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BernoulliCellSampler(double lb, double ub, boolean complement)

Method Summary

Modifier and Type	Method and Description
BernoulliCellSampler<T>	clone() return a copy of the RandomSampler object
BernoulliCellSampler<T>	cloneComplement() Return a sampler that is the complement of the range specified of the current sampler.
int	sample() Whether to sample the next item or not.
void	setSeed(long seed) Set random seed.

Methods inherited from class Object

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

Methods inherited from interface org.apache.spark.util.random.RandomSampler

sample

Constructor Detail

BernoulliCellSampler

public BernoulliCellSampler(double lb,
                            double ub,
                            boolean complement)

Method Detail

setSeed

public void setSeed(long seed)

Description copied from interface: Pseudorandom

Set random seed.

Specified by:

setSeed in interface Pseudorandom

sample

public int sample()

Description copied from interface: RandomSampler

Whether to sample the next item or not. Return how many times the next item will be sampled. Return 0 if it is not sampled.

Specified by:

sample in interface RandomSampler<T,T>

Returns:

(undocumented)

cloneComplement

public BernoulliCellSampler<T> cloneComplement()

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

Returns:

(undocumented)

clone

public BernoulliCellSampler<T> clone()

Description copied from interface: RandomSampler

return a copy of the RandomSampler object

Specified by:

clone in interface RandomSampler<T,T>

Overrides:

clone in class Object