Examples of DifferentiableMultivariateRealFunction

Examples of org.apache.commons.math.analysis.DifferentiableMultivariateRealFunction

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*/
public class PowellOptimizerTest {

    @Test
    public void testSumSinc() throws MathException {
        final DifferentiableMultivariateRealFunction func = new SumSincFunction(-1);

        int dim = 2;
        final double[] minPoint = new double[dim];
        for (int i = 0; i < dim; i++) {
            minPoint[i] = 0;
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Examples of org.apache.commons.math.analysis.DifferentiableMultivariateRealFunction

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        doTest(func, minPoint, init,  GoalType.MINIMIZE, 1e-5, 1e-9, 1e-7);
    }

    @Test
    public void testQuadratic() throws MathException {
        final DifferentiableMultivariateRealFunction func = new DifferentiableMultivariateRealFunction() {
                public double value(double[] x) {
                    final double a = x[0] - 1;
                    final double b = x[1] - 1;
                    return a * a + b * b + 1;
                }
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Examples of org.apache.commons.math.analysis.DifferentiableMultivariateRealFunction

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        doTest(func, minPoint, init, GoalType.MINIMIZE, 1e-5, 1e-9, 1e-8);
    }

    @Test
    public void testMaximizeQuadratic() throws MathException {
        final DifferentiableMultivariateRealFunction func = new DifferentiableMultivariateRealFunction() {
                public double value(double[] x) {
                    final double a = x[0] - 1;
                    final double b = x[1] - 1;
                    return -a * a - b * b + 1;
                }
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