Example usage for org.apache.commons.math3.linear RealVector toArray

Introduction

In this page you can find the example usage for org.apache.commons.math3.linear RealVector toArray.

Prototype

public double[] toArray()

Source Link

Document

Convert the vector to an array of double s.

Usage

From source file:de.termininistic.serein.examples.benchmarks.functions.multimodal.RastriginFunction.java

@Override
public double map(RealVector v) {
    double fx = Double.NaN;
    double[] x = v.toArray();
    int n = x.length;
    fx = 10 * n;//  w  w  w  .j a  va  2 s.c  o  m
    for (int i = 0; i < n; i++) {
        fx += x[i] * x[i] - 10 * Math.cos(2 * Math.PI * x[i]);
    }
    return fx;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.multimodal.SchwefelFunction.java

@Override
public double map(RealVector v) {
    double[] x = v.toArray();
    int n = x.length;
    double fx = 418.9829 * n;
    for (int i = 0; i < n; i++) {
        fx += -x[i] * Math.sin((Math.sqrt(Math.abs(x[i]))));
    }//  ww  w.  j a  v  a 2  s.  c  om
    return fx;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.multimodal.GriewankFunction.java

@Override
public double map(RealVector v) {
    double[] x = v.toArray();
    double sum = 0.0;
    double prod = 1.0;
    for (int i = 0; i < x.length; i++) {
        sum += x[i] * x[i] / 4000;//from   w  w w .  j  a  v  a 2s  .  c  o m
        prod *= Math.cos(x[i] / Math.sqrt(i + 1));
    }
    return sum - prod + 1;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.unimodal.SumOfDifferentPowersFunction.java

@Override
public double map(RealVector v) {

    double[] x = v.toArray();
    int n = x.length;
    double sum = 0.0;
    for (int i = 0; i < n; i++) {
        sum += Math.pow(Math.abs(x[i]), i + 2);
    }/*from  w w  w  .  jav  a  2  s  .com*/
    return sum;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.unimodal.SumSquaresFunction.java

@Override
public double map(RealVector v) {

    double[] x = v.toArray();
    int n = x.length;
    double sum = 0.0;
    for (int i = 0; i < n; i++) {
        sum += (i + 1) * x[i] * x[i];/*from   ww w .  ja  v  a2 s.c  o m*/
    }
    return sum;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.multimodal.MichalewiczFunction.java

@Override
public double map(RealVector v) {
    double[] x = v.toArray();
    double sum = 0.0;
    for (int i = 0; i < x.length; i++) {
        sum += Math.sin(x[i]) * Math.pow(Math.sin((i + 1) * x[i] * x[i] / Math.PI), 2 * m);
    }/*  w w  w  . j a  va2 s  .c om*/
    return -sum;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.multimodal.StyblinskiTangFunction.java

@Override
public double map(RealVector v) {
    double[] x = v.toArray();
    int n = x.length;
    double sum = 0.0;

    for (int i = 0; i < n; i++) {
        sum += Math.pow(x[i], 4) - 16 * x[i] * x[i] + 5 * x[i];
    }//www .j  a  v a  2  s. c  o  m

    return 0.5 * sum;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.multimodal.AckleyFunction.java

@Override
public double map(RealVector v) {
    double[] x = v.toArray();
    int n = x.length;
    double sum1 = 0.0, sum2 = 0.0;

    for (int i = 0; i < n; i++) {
        sum1 += x[i] * x[i];//www. ja  v  a 2 s . c o  m
        sum2 += Math.cos(2 * Math.PI * x[i]);
    }
    double fx = -20 * Math.exp(-0.2 * Math.sqrt(sum1 / n)) - Math.exp(sum2 / n) + 20 + Math.E;
    return fx;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.unimodal.DixonPriceFunction.java

@Override
public double map(RealVector v) {

    double[] x = v.toArray();
    int n = x.length;
    double fx = (x[0] - 1) * (x[0] - 1);
    for (int i = 1; i < n; i++) {
        fx += i * Math.pow((2 * x[i] * x[i] - x[i - 1]), 2);
    }// w  w w.  jav a 2  s  .  com
    return fx;
}

From source file:de.termininistic.serein.examples.benchmarks.functions.unimodal.RotatedHyperEllipsoidFunction.java

@Override
public double map(RealVector v) {

    double[] x = v.toArray();
    int n = x.length;
    double sum = 0.0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j <= i; j++) {
            sum += x[j] * x[j];/*from   w  ww.j  a v  a2s  .  c om*/
        }
    }
    return sum;
}