org.moeaframework.util.sequence
Class LatinHypercube

java.lang.Object
  org.moeaframework.util.sequence.LatinHypercube

All Implemented Interfaces:

Sequence

public class LatinHypercube
extends Object
implements Sequence

Generates sequences using Latin hypercube sampling (LHS). Each axis is divided into N stripes and exactly one point may exist in each stripe.

References:

1. McKay M.D., Beckman, R.J., and Conover W.J. "A Comparison of Three Methods for Selecting Values of Input Variables in the Analysis of Output from a Computer Code." Technometrics, 21(2):239-245, 1979.

Constructor Summary

LatinHypercube()
Constructs a Latin hypercube sequence generator.

Method Summary

double[][]

generate(int N, int D) Returns a N x D matrix of real numbers in the range [0, 1].

Methods inherited from class java.lang.Object

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

Constructor Detail

LatinHypercube

public LatinHypercube()

Constructs a Latin hypercube sequence generator.

Method Detail

generate

public double[][] generate(int N,
                           int D)

Description copied from interface: Sequence

Returns a N x D matrix of real numbers in the range [0, 1].

Specified by:

generate in interface Sequence

Parameters:

N - the number of sample points

D - the dimension of each sample point

Returns:

a N x D matrix of real numbers in the range [0, 1]