Example usage for org.apache.mahout.common RandomWrapper getRandomGenerator

Introduction

In this page you can find the example usage for org.apache.mahout.common RandomWrapper getRandomGenerator.

Prototype

public RandomGenerator getRandomGenerator() 

Source Link

Usage

From source file:org.codelibs.elasticsearch.taste.common.SamplingLongPrimitiveIterator.java

License:Apache License

public SamplingLongPrimitiveIterator(final RandomWrapper random, final LongPrimitiveIterator delegate,
        final double samplingRate) {
    Preconditions.checkNotNull(delegate);
    Preconditions.checkArgument(samplingRate > 0.0 && samplingRate <= 1.0,
            "Must be: 0.0 < samplingRate <= 1.0");
    // Geometric distribution is special case of negative binomial (aka Pascal) with r=1:
    geometricDistribution = new PascalDistribution(random.getRandomGenerator(), 1, samplingRate);
    this.delegate = delegate;
    hasNext = true;//w ww.java2s  . c  om
    doNext();
}

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From source file:org.gpfvic.mahout.cf.taste.impl.common.SamplingLongPrimitiveIterator.java

License:Apache License

public SamplingLongPrimitiveIterator(RandomWrapper random, LongPrimitiveIterator delegate,
        double samplingRate) {
    Preconditions.checkNotNull(delegate);
    Preconditions.checkArgument(samplingRate > 0.0 && samplingRate <= 1.0,
            "Must be: 0.0 < samplingRate <= 1.0");
    // Geometric distribution is special case of negative binomial (aka Pascal) with r=1:
    geometricDistribution = new PascalDistribution(random.getRandomGenerator(), 1, samplingRate);
    this.delegate = delegate;
    this.hasNext = true;
    doNext();//from w ww  .ja va  2s  .co m
}

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