Examples with Random org.nd4j.linalg.api.rng.Random used on opensource projects

Example 6 with Random

use of org.nd4j.linalg.api.rng.Random in project nd4j by deeplearning4j.

the class RandomTests method testJavaSide1.

@Test
public void testJavaSide1() throws Exception {
    Random random1 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    Random random2 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    float[] array1 = new float[1000];
    float[] array2 = new float[1000];
    for (int e = 0; e < array1.length; e++) {
        array1[e] = random1.nextFloat();
        array2[e] = random2.nextFloat();
        assertTrue(array1[e] <= 1.0f);
    }
    assertArrayEquals(array1, array2, 1e-5f);
}

Example 7 with Random

use of org.nd4j.linalg.api.rng.Random in project nd4j by deeplearning4j.

the class RandomTests method testStepOver3.

@Test
public void testStepOver3() throws Exception {
    Random random = Nd4j.getRandomFactory().getNewRandomInstance(119);
    if (random instanceof NativeRandom) {
        NativeRandom rng = (NativeRandom) random;
        assertTrue(rng.getBufferSize() > 1000000L);
        int someInt = rng.nextInt();
        for (int e = 0; e < 10000; e++) rng.nextInt();
        random.setSeed(119);
        int sameInt = rng.nextInt();
        assertEquals(someInt, sameInt);
        random.setSeed(120);
        int otherInt = rng.nextInt();
        assertNotEquals(someInt, otherInt);
    } else
        log.warn("Not a NativeRandom object received, skipping test");
}

Example 8 with Random

use of org.nd4j.linalg.api.rng.Random in project nd4j by deeplearning4j.

the class RandomTests method testBernoulliDistribution2.

@Test
public void testBernoulliDistribution2() throws Exception {
    Random random1 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    Random random2 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    INDArray z1 = Nd4j.zeros(20);
    INDArray z2 = Nd4j.zeros(20);
    INDArray z1Dup = Nd4j.zeros(20);
    INDArray exp = Nd4j.create(new double[] { 1.00, 0.00, 1.00, 0.00, 1.00, 1.00, 0.00, 1.00, 1.00, 0.00, 0.00, 0.00, 1.00, 1.00, 1.00, 0.00, 0.00, 0.00, 0.00, 0.00 });
    BernoulliDistribution op1 = new BernoulliDistribution(z1, 0.50);
    BernoulliDistribution op2 = new BernoulliDistribution(z2, 0.50);
    Nd4j.getExecutioner().exec(op1, random1);
    Nd4j.getExecutioner().exec(op2, random2);
    assertNotEquals(z1Dup, z1);
    assertEquals(z1, z2);
    assertEquals(exp, z1);
}

Example 9 with Random

use of org.nd4j.linalg.api.rng.Random in project nd4j by deeplearning4j.

the class RandomTests method testDistribution2.

@Test
public void testDistribution2() throws Exception {
    Random random1 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    Random random2 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    INDArray z1 = Nd4j.create(32);
    INDArray z2 = Nd4j.create(32);
    UniformDistribution distribution = new UniformDistribution(z1, 1.0, 2.0);
    Nd4j.getExecutioner().exec(distribution, random1);
    UniformDistribution distribution2 = new UniformDistribution(z2, 1.0, 2.0);
    Nd4j.getExecutioner().exec(distribution2, random2);
    System.out.println("Data: " + z1);
    System.out.println("Data: " + z2);
    for (int e = 0; e < z1.length(); e++) {
        double val = z1.getDouble(e);
        assertTrue(val >= 1.0 && val <= 2.0);
    }
    assertEquals(z1, z2);
}

Example 10 with Random

use of org.nd4j.linalg.api.rng.Random in project nd4j by deeplearning4j.

the class RandomTests method testJavaSide4.

/**
 * This test checks reSeed mechanics for native side
 *
 * @throws Exception
 */
@Test
public void testJavaSide4() throws Exception {
    Random random1 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    Random random2 = Nd4j.getRandomFactory().getNewRandomInstance(119);
    int[] array1 = new int[1000];
    int[] array2 = new int[1000];
    for (int e = 0; e < array1.length; e++) {
        array1[e] = random1.nextInt();
        array2[e] = random2.nextInt();
        assertEquals(array1[e], array2[e]);
        assertTrue(array1[e] >= 0);
    }
    assertArrayEquals(array1, array2);
    random1.reSeed();
    random1.reSeed();
    int[] array3 = new int[1000];
    int[] array4 = new int[1000];
    for (int e = 0; e < array1.length; e++) {
        array3[e] = random1.nextInt();
        array4[e] = random2.nextInt();
        assertNotEquals(array3[e], array4[e]);
        assertTrue(array1[e] >= 0);
    }
}