Package de.uni_mannheim.informatik.dws.melt.matching_jena_matchers.util.addnegatives

Class RandomSampleSet<E>

java.lang.Object

de.uni_mannheim.informatik.dws.melt.matching_jena_matchers.util.addnegatives.RandomSampleSet<E>

Type Parameters:

E - the type of element in the set

public class RandomSampleSet<E>
extends Object

A helper class to randomly sample elements from an initial set.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<E>	list	To this list no elements are added and it is initialized by a set.
private double	listSize
private final Random	rand

Constructor Summary

Constructors

Constructor	Description
RandomSampleSet(Set<E> set)
RandomSampleSet(Set<E> set, long seed)
RandomSampleSet(Set<E> set, Random rand)

Method Summary

Modifier and Type	Method	Description
E	getRandomElement()
E	getRandomElement(Set<E> exclude)
List<E>	getRandomElementsWithoutRepetition(int countOfElements)
List<E>	getRandomElementsWithoutRepetition(int countOfElements, Set<E> exclude)
List<E>	getRandomElementsWithRepetition(int countOfElements)
List<E>	getRandomElementsWithRepetition(int countOfElements, Set<E> exclude)

Methods inherited from class java.lang.Object

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

Field Details

rand

private final Random rand

list

private final List<E> list

To this list no elements are added and it is initialized by a set. Thus we can make sure, that the list contains no two same elements.

listSize

private double listSize

Constructor Details

RandomSampleSet

public RandomSampleSet(Set<E> set)

RandomSampleSet

public RandomSampleSet(Set<E> set,
 Random rand)

RandomSampleSet

public RandomSampleSet(Set<E> set,
 long seed)

Method Details

getRandomElement

public E getRandomElement()

getRandomElement

public E getRandomElement(Set<E> exclude)

getRandomElementsWithRepetition

public List<E> getRandomElementsWithRepetition(int countOfElements)

getRandomElementsWithRepetition

public List<E> getRandomElementsWithRepetition(int countOfElements,
 Set<E> exclude)

getRandomElementsWithoutRepetition

public List<E> getRandomElementsWithoutRepetition(int countOfElements)

getRandomElementsWithoutRepetition

public List<E> getRandomElementsWithoutRepetition(int countOfElements,
 Set<E> exclude)