org.optaplanner.core.impl.heuristic.selector.common.nearby
Class ParabolicDistributionNearbyRandom

java.lang.Object
  org.optaplanner.core.impl.heuristic.selector.common.nearby.ParabolicDistributionNearbyRandom

All Implemented Interfaces:

NearbyRandom

public class ParabolicDistributionNearbyRandom
extends Object
implements NearbyRandom

P(x) = 3(m - x)²/k³ Cumulative probability F(x) = 1 - (1 - x/k)³ Inverse cumulative probability F(p) = m(1 - (1 - p)^(1/3))

Field Summary

protected int

sizeMaximum

Constructor Summary

ParabolicDistributionNearbyRandom(int sizeMaximum)

Method Summary

int	nextInt(Random random, int n)

Methods inherited from class java.lang.Object

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

Field Detail

sizeMaximum

protected final int sizeMaximum

Constructor Detail

ParabolicDistributionNearbyRandom

public ParabolicDistributionNearbyRandom(int sizeMaximum)

Method Detail

nextInt

public int nextInt(Random random,
                   int n)

Specified by:

nextInt in interface NearbyRandom