Example usage for org.apache.commons.math3.random RandomGenerator setSeed

Introduction

In this page you can find the example usage for org.apache.commons.math3.random RandomGenerator setSeed.

Prototype

void setSeed(long seed);

Source Link

Document

Sets the seed of the underlying random number generator using a long seed.

Usage

From source file:cz.cuni.mff.d3s.spl.utils.DistributionUtils.java

/** Create empirical distribution from given samples.
 * /*from   ww  w . j av  a2 s.co  m*/
 * @param samples Samples (does not need to be distinct) to use.
 * @return Empirical distribution built from the samples.
 */
public static EmpiricalDistribution makeEmpirical(double[] samples) {
    /* Be deterministic for now. */
    RandomGenerator gen = new JDKRandomGenerator();
    gen.setSeed(0);

    EmpiricalDistribution result = new EmpiricalDistribution(samples.length / 10 + 1, gen);
    result.load(samples);

    return result;
}

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From source file:com.anhth12.lambda.common.random.RandomManager.java

/**
 * <em>Only call in test code.</em> Causes all known instances of {@link RandomGenerator},
 * and future ones, to be started from a fixed seed. This is useful for making
 * tests deterministic./*from   w  ww  .  ja v a 2s.co  m*/
 */
public static void useTestSeed() {
    useTestSeed = true;
    Collection<RandomGenerator> instances = INSTANCES.get();
    if (instances != null) {
        synchronized (instances) {
            for (RandomGenerator random : instances) {
                random.setSeed(TEST_SEED);
            }
            instances.clear();
        }
        INSTANCES.clear();
    }
}

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From source file:com.cloudera.oryx.common.random.RandomManager.java

/**
 * <em>Only call in test code.</em> Causes all known instances of {@link RandomGenerator}, and future ones,
 * to be started from a fixed seed. This is useful for making tests deterministic.
 *///from  w ww. jav a  2 s .  c  om
public static void useTestSeed() {
    useTestSeed = true;
    synchronized (INSTANCES) {
        for (RandomGenerator random : INSTANCES.keySet()) {
            random.setSeed(TEST_SEED);
        }
        INSTANCES.clear();
    }
}

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From source file:com.github.aptd.simulation.CMain.java

private static void execute(final CommandLine p_cli) {
    final double l_changetimemin = Double.parseDouble(p_cli.getOptionValue("changetimemin", "100"));
    final double l_changetimemax = Double.parseDouble(p_cli.getOptionValue("changetimemax", "100"));
    final int l_numberofpassengers = Integer.parseUnsignedInt(p_cli.getOptionValue("numberofpassengers", "20"));
    final double l_lightbarrierminfreetime = Double
            .parseDouble(p_cli.getOptionValue("lightbarrierminfreetime", "3.0"));
    final double l_delayseconds = Double.parseDouble(p_cli.getOptionValue("delayseconds", "0.0"));

    // load configuration
    CConfiguration.INSTANCE.loadfile(p_cli.getOptionValue("config", ""));

    // execute experiments in batch processing and starts http server
    new Thread(() -> datamodel(p_cli).map(i -> i.getLeft().model().get(

            EFactory.from(CConfiguration.INSTANCE.getOrDefault("local", "runtime", "type")).factory(),

            i.getRight(),/*from ww w . j  a  v  a2  s .c o  m*/

            p_cli.hasOption("iteration") ? Long.parseLong(p_cli.getOptionValue("iteration"))
                    : (long) CConfiguration.INSTANCE.getOrDefault(0, "default", "iteration"),

            !p_cli.hasOption("sequential")
                    && CConfiguration.INSTANCE.<Boolean>getOrDefault(true, "runtime", "parallel"),

            p_cli.hasOption("timemodel") ? p_cli.getOptionValue("timemodel") : "step",

            () -> {
                if (l_changetimemax <= l_changetimemin)
                    return new ConstantRealDistribution(l_changetimemin);
                final RandomGenerator l_randomgenerator = new JDKRandomGenerator();
                l_randomgenerator.setSeed(Long.parseLong(p_cli.getOptionValue("changetimeseed", "1")));
                return new UniformRealDistribution(l_randomgenerator, l_changetimemin, l_changetimemax);
            },

            l_numberofpassengers, l_lightbarrierminfreetime, l_delayseconds))
            .forEach(i -> ERuntime.LOCAL.get().execute(i))).start();

    // start http server if possible
    if (p_cli.hasOption("interactive"))
        CHTTPServer.execute();
}

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From source file:com.github.rinde.rinsim.core.model.rand.RandomModelTest.java

static void testUnmodifiable(RandomGenerator rng) {
    boolean fail = false;
    try {//w w w  . j a  v  a 2  s.co  m
        rng.setSeed(0);
    } catch (final UnsupportedOperationException e) {
        fail = true;
    }
    assertTrue(fail);
    fail = false;
    try {
        rng.setSeed(new int[] { 0 });
    } catch (final UnsupportedOperationException e) {
        fail = true;
    }
    assertTrue(fail);
    fail = false;
    try {
        rng.setSeed(123L);
    } catch (final UnsupportedOperationException e) {
        fail = true;
    }
    assertTrue(fail);
    fail = false;

    rng.nextBoolean();
    rng.nextBytes(new byte[] {});
    rng.nextDouble();
    rng.nextFloat();
    rng.nextGaussian();
    rng.nextInt();
    rng.nextInt(1);
    rng.nextLong();
}

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From source file:io.coala.random.impl.RandomNumberStreamFactoryWell19937c.java

@Override
public RandomNumberStream create(final RandomNumberStreamID id, final Number seed) {
    final RandomGenerator rng = new Well19937c();
    rng.setSeed(seed.intValue());
    return RandomNumberStream.Util.asStream(id, rng);
}

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From source file:io.coala.random.impl.RandomNumberStreamFactoryJDK.java

@Override
public RandomNumberStream create(final RandomNumberStreamID id, final Number seed) {
    final RandomGenerator rng = new JDKRandomGenerator();
    rng.setSeed(seed.intValue());
    return RandomNumberStream.Util.asStream(id, rng);
}

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From source file:com.github.joulupunikki.math.random.BitsStreamGenerator64Test.java

@Override
protected RandomGenerator makeGenerator() {
    RandomGenerator generator = new TestBitStreamGenerator64();
    generator.setSeed(1000);
    return generator;
}

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From source file:com.github.joulupunikki.math.random.BitsStreamGenerator64SeedTest.java

@Override
protected RandomGenerator makeGenerator() {
    RandomGenerator generator = new TestBitStreamGenerator64Seed();
    generator.setSeed(1);
    return generator;
}

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From source file:com.github.rinde.rinsim.scenario.generator.PoissonProcessTest.java

/**
 * Tests determinism of arrival times generators, given the same random number
 * generator and seed they should always return the same sequence.
 *///from w w  w  .j av  a 2  s  . c  o m
@Test
public void determinismTest() {
    final RandomGenerator outer = new MersenneTwister(123);

    for (int i = 0; i < 100; i++) {
        final long seed = outer.nextLong();
        final RandomGenerator inner = new MersenneTwister(seed);
        final List<Double> list1 = poisson.generate(inner.nextLong());
        for (int j = 0; j < 100; j++) {
            inner.setSeed(seed);
            final List<Double> list2 = poisson.generate(inner.nextLong());
            assertEquals(list1, list2);
        }
    }
}

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