Example usage for weka.experiment Stats Stats

Introduction

In this page you can find the example usage for weka.experiment Stats Stats.

Prototype

Stats

Source Link

Usage

From source file:machinelearningcw.EnhancedLinearPerceptron.java

public void calculateMeansAndSTDev(Instances instances) {
    means = new double[instances.numAttributes() - 1];//intialize means
    std = new double[instances.numAttributes() - 1];//intialize stdevs
    for (int j = 0; j < instances.numAttributes() - 1; j++) {
        Stats s = new Stats();

        for (int i = 0; i < instances.numInstances(); i++) {
            s.add(instances.get(i).value(j));//adds values to calc std
        }//from   w  w w.ja  va2 s.  co  m
        s.calculateDerived(); //calculates mean and stdDev
        means[j] = s.mean;
        std[j] = s.stdDev;
    }

}

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