Package org.apache.commons.math3.random

Examples of org.apache.commons.math3.random.MersenneTwister

132
133
134
135
136
137
138
139
140
141
142
143
            generators.add(new Pair<String, RandomVectorGenerator>("Uncorrelated\nUniform(JDK)",
                    new UncorrelatedRandomVectorGenerator(2, new UniformRandomGenerator(new JDKRandomGenerator()))));
            generators.add(new Pair<String, RandomVectorGenerator>("Independent\nRandom(MT)", new RandomVectorGenerator() {

                RandomGenerator[] rngs = new RandomGenerator[] {
                    new MersenneTwister(0),
                    new MersenneTwister(1)
                };
               
                public double[] nextVector() {
                    final double[] vector = new double[2];
                    vector[0] = rngs[0].nextDouble();
View Full Code Here
367
368
369
370
371
372
373
374
375
376
377
    @Test
    public void testMath864() {
        final CMAESOptimizer optimizer
            = new CMAESOptimizer(30000, 0, true, 10,
                                 0, new MersenneTwister(), false, null);
        final MultivariateFunction fitnessFunction = new MultivariateFunction() {
                public double value(double[] parameters) {
                    final double target = 1;
                    final double error = target - parameters[0];
                    return error * error;
 
View Full Code Here
398
399
400
401
402
403
404
405
406
407
408
     */
    @Test
    public void testFitAccuracyDependsOnBoundary() {
        final CMAESOptimizer optimizer
            = new CMAESOptimizer(30000, 0, true, 10,
                                 0, new MersenneTwister(), false, null);
        final MultivariateFunction fitnessFunction = new MultivariateFunction() {
                public double value(double[] parameters) {
                    final double target = 11.1;
                    final double error = target - parameters[0];
                    return error * error;
 
View Full Code Here
485
486
487
488
489
490
491
492
493
494
495
                        int maxEvaluations,
                        PointValuePair expected) {
        int dim = startPoint.length;
        // test diagonalOnly = 0 - slow but normally fewer feval#
        CMAESOptimizer optim = new CMAESOptimizer(30000, stopValue, isActive, diagonalOnly,
                                                  0, new MersenneTwister(), false, null);
        PointValuePair result = boundaries == null ?
            optim.optimize(new MaxEval(maxEvaluations),
                           new ObjectiveFunction(func),
                           goal,
                           new InitialGuess(startPoint),
View Full Code Here
41
42
43
44
45
46
47
    private RandomGenerator generator;

    @Before
    public void setUp() {
        field = new DfpField(40);
        generator = new MersenneTwister(6176597458463500194l);
    }
View Full Code Here
27
28
29
30
31
32
33
34
  private static final long STANDARD_SEED = 0xCAFEDEADBEEFBABEL;

  private final RandomGenerator random;

  RandomWrapper() {
    random = new MersenneTwister();
    random.setSeed(System.currentTimeMillis() + System.identityHashCode(random));
  }
View Full Code Here
32
33
34
35
36
37
38
    random = new MersenneTwister();
    random.setSeed(System.currentTimeMillis() + System.identityHashCode(random));
  }

  RandomWrapper(long seed) {
    random = new MersenneTwister(seed);
  }
View Full Code Here
46
47
48
49
50
51
52
53
54
55
56
    public Random createRandom() {
        switch (randomType) {
            case JDK:
                return randomSeed == null ? new Random() : new Random(randomSeed);
            case MERSENNE_TWISTER:
                return new RandomAdaptor(randomSeed == null ? new MersenneTwister() : new MersenneTwister(randomSeed));
            case WELL512A:
                return new RandomAdaptor(randomSeed == null ? new Well512a() : new Well512a(randomSeed));
            case WELL1024A:
                return new RandomAdaptor(randomSeed == null ? new Well1024a() : new Well1024a(randomSeed));
            case WELL19937A:
View Full Code Here
61
62
63
64
65
66
67
68
69
70
71
72
73
   * @return a new, seeded {@link RandomGenerator}
   */
  public static RandomGenerator getRandom() {
    if (useTestSeed) {
      // No need to track instances anymore
      return new MersenneTwister(TEST_SEED);
    }
    RandomGenerator random = new MersenneTwister();
    synchronized (INSTANCES) {
      INSTANCES.put(random, Boolean.TRUE);
    }
    return random;
  }
View Full Code Here
458
459
460
461
462
463
464
465
466
467
468
            int maxEvaluations,
            PointValuePair expected) {
        int dim = startPoint.length;
        // test diagonalOnly = 0 - slow but normally fewer feval#
        CMAESOptimizer optim = new CMAESOptimizer(30000, stopValue, isActive, diagonalOnly,
                                                  0, new MersenneTwister(), false, null);
        final double[] lB = boundaries == null ? null : boundaries[0];
        final double[] uB = boundaries == null ? null : boundaries[1];
        PointValuePair result = boundaries == null ?
            optim.optimize(maxEvaluations, func, goal,
                           new InitialGuess(startPoint),
View Full Code Here
TOP

Related Classes of org.apache.commons.math3.random.MersenneTwister

  • org.apache.commons.math3.analysis.differentiation.DerivativeStructure
  • org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableVectorFunction
  • org.apache.commons.math3.analysis.function.HarmonicOscillator
  • org.apache.commons.math3.analysis.function.Sin
  • org.apache.commons.math3.analysis.function.Sinc
  • org.apache.commons.math3.analysis.MultivariateFunction
  • org.apache.commons.math3.analysis.QuinticFunction
  • org.apache.commons.math3.analysis.solvers.BrentSolver
  • org.apache.commons.math3.analysis.UnivariateFunction
  • org.apache.commons.math3.complex.Complex
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.