Example usage for org.apache.commons.math3.distribution UniformRealDistribution sample

Introduction

In this page you can find the example usage for org.apache.commons.math3.distribution UniformRealDistribution sample.

Prototype

public double[] sample(int sampleSize) 

Source Link

Document

The default implementation generates the sample by calling #sample() in a loop.

Usage

From source file:com.github.tteofili.looseen.yay.SGM.java

private RealMatrix[] initWeights() {
    int[] conf = new int[] { configuration.inputs, configuration.vectorSize, configuration.outputs };
    int[] layers = new int[conf.length];
    System.arraycopy(conf, 0, layers, 0, layers.length);
    int weightsCount = layers.length - 1;

    RealMatrix[] initialWeights = new RealMatrix[weightsCount];

    for (int i = 0; i < weightsCount; i++) {
        RealMatrix matrix = MatrixUtils.createRealMatrix(layers[i + 1], layers[i]);

        UniformRealDistribution uniformRealDistribution = new UniformRealDistribution();
        double[] vs = uniformRealDistribution.sample(matrix.getRowDimension() * matrix.getColumnDimension());
        int r = 0;
        int c = 0;
        for (double v : vs) {
            matrix.setEntry(r % matrix.getRowDimension(), c % matrix.getColumnDimension(), v);
            r++;/*from   w w w  . j a  v a  2s. c  o m*/
            c++;
        }

        initialWeights[i] = matrix;
    }
    return initialWeights;

}

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