Example usage for weka.core.matrix DoubleVector times

Introduction

In this page you can find the example usage for weka.core.matrix DoubleVector times.

Prototype

public DoubleVector times(DoubleVector v) 

Source Link

Document

Multiplies another DoubleVector element by element

Usage

From source file:tml.utils.DistanceLib.java

License:Apache License

public static double cosine(Instance inst1, Instance inst2) {
    DoubleVector x = new DoubleVector(inst1.toDoubleArray());
    DoubleVector y = new DoubleVector(inst2.toDoubleArray());

    double dotXY = x.times(y).norm1();
    double cosim = dotXY / (x.norm2() * y.norm2());

    return cosim;
}

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