Example usage for org.apache.hadoop.util.bloom Key set

Introduction

In this page you can find the example usage for org.apache.hadoop.util.bloom Key set.

Prototype

public void set(byte[] value, double weight) 

Source Link

Usage

From source file:hivemall.sketch.bloom.BloomAndUDFTest.java

License:Apache License

@Nonnull
private static DynamicBloomFilter createBloomFilter(long seed, int size) {
    DynamicBloomFilter dbf = BloomFilterUtils.newDynamicBloomFilter(3000);
    final Key key = new Key();

    final Random rnd1 = new Random(seed);
    for (int i = 0; i < size; i++) {
        double d = rnd1.nextGaussian();
        String s = Double.toHexString(d);

        key.set(s.getBytes(), 1.0);
        dbf.add(key);//  www  .j a  v a  2s .  c  om
    }

    return dbf;
}

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From source file:hivemall.sketch.bloom.BloomAndUDFTest.java

License:Apache License

private static void assertNotContains(@Nonnull Filter expected, @Nonnull Filter actual, long seed, int size) {
    final Key key = new Key();

    final Random rnd1 = new Random(seed);
    for (int i = 0; i < size; i++) {
        double d = rnd1.nextGaussian();
        String s = Double.toHexString(d);
        key.set(s.getBytes(), 1.0);
        Assert.assertEquals(expected.membershipTest(key), actual.membershipTest(key));
    }/*from w w w . j  a  v  a  2  s  .  c  o m*/
}

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From source file:hivemall.sketch.bloom.BloomContainsUDFTest.java

License:Apache License

@Nonnull
private static DynamicBloomFilter createBloomFilter(long seed, int size) {
    DynamicBloomFilter dbf = BloomFilterUtils.newDynamicBloomFilter(30);
    final Key key = new Key();

    final Random rnd1 = new Random(seed);
    for (int i = 0; i < size; i++) {
        double d = rnd1.nextGaussian();
        String s = Double.toHexString(d);
        Text t = new Text(s);
        key.set(t.getBytes(), 1.0);
        dbf.add(key);/*  w w  w.j a  v  a2s  .  co  m*/
    }

    return dbf;
}

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From source file:hivemall.sketch.bloom.BloomFilterUtilsTest.java

License:Apache License

@Test
public void testDynamicBloomFilter() {
    DynamicBloomFilter dbf = BloomFilterUtils.newDynamicBloomFilter(300000);
    final Key key = new Key();

    final Random rnd1 = new Random(43L);
    for (int i = 0; i < 1000000; i++) {
        double d = rnd1.nextGaussian();
        String s = Double.toHexString(d);
        key.set(s.getBytes(), 1.0);
        dbf.add(key);/*from   w ww . j av  a2 s.  c  om*/
    }

    final Random rnd2 = new Random(43L);
    for (int i = 0; i < 1000000; i++) {
        double d = rnd2.nextGaussian();
        String s = Double.toHexString(d);
        key.set(s.getBytes(), 1.0);
        Assert.assertTrue(dbf.membershipTest(key));
    }
}

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From source file:hivemall.sketch.bloom.BloomFilterUtilsTest.java

License:Apache License

@Test
public void testDynamicBloomFilterSerde() throws IOException {
    final Key key = new Key();

    DynamicBloomFilter dbf1 = BloomFilterUtils.newDynamicBloomFilter(300000);
    final Random rnd1 = new Random(43L);
    for (int i = 0; i < 1000000; i++) {
        double d = rnd1.nextGaussian();
        String s = Double.toHexString(d);
        key.set(s.getBytes(), 1.0);
        dbf1.add(key);//w  w w .j  a va2s  .com
    }

    DynamicBloomFilter dbf2 = BloomFilterUtils.deserialize(BloomFilterUtils.serialize(dbf1),
            new DynamicBloomFilter());
    final Random rnd2 = new Random(43L);
    for (int i = 0; i < 1000000; i++) {
        double d = rnd2.nextGaussian();
        String s = Double.toHexString(d);
        key.set(s.getBytes(), 1.0);
        Assert.assertTrue(dbf2.membershipTest(key));
    }
}

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From source file:hivemall.sketch.bloom.BloomOrUDFTest.java

License:Apache License

private static void assertEquals(@Nonnull Filter expected, @Nonnull Filter actual, long seed, int size) {
    final Key key = new Key();

    final Random rnd1 = new Random(seed);
    for (int i = 0; i < size; i++) {
        double d = rnd1.nextGaussian();
        String s = Double.toHexString(d);
        key.set(s.getBytes(), 1.0);
        Assert.assertEquals(expected.membershipTest(key), actual.membershipTest(key));
    }//from ww w .j av a  2 s . c o  m
}

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From source file:org.apache.mahout.utils.nlp.collocations.llr.BloomTokenFilterTest.java

License:Apache License

private static void setKey(Key k, String s) throws IOException {
    ByteBuffer buffer = encoder.encode(CharBuffer.wrap(s.toCharArray()));
    k.set(buffer.array(), 1.0);
}

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