Example usage for weka.core Instance numAttributes

Introduction

In this page you can find the example usage for weka.core Instance numAttributes.

Prototype

public int numAttributes();

Source Link

Document

Returns the number of attributes.

Usage

From source file:tutorial.exampleMIMLInstances.java

License:Open Source License

public static void main(String[] args) {

    try {//  w  w  w .j av a2  s .  co  m

        // String arffFileName = Utils.getOption("f", args);
        // String xmlFileName = Utils.getOption("x", args);
        // String arffFileName = "data+File.separator+miml_text_data.arff";
        // String xmlFileName = "data+File.separator+miml_text_data.xml";

        String arffFileName = "data" + File.separator + "toy.arff";
        String xmlFileName = "data" + File.separator + "toy.xml";

        // Parameter checking
        if (arffFileName.isEmpty()) {
            System.out.println("Arff pathName must be specified.");
            showUse();
        }
        if (xmlFileName.isEmpty()) {
            System.out.println("Xml pathName must be specified.");
            showUse();
        }

        // Loads the dataset
        System.out.println("Loading the dataset....");
        MIMLInstances mimlDataSet = new MIMLInstances(arffFileName, xmlFileName);

        System.out.println("Number of bags: " + mimlDataSet.getNumBags());
        System.out.println("Number of Instances (bags): " + mimlDataSet.getNumInstances());
        System.out.println("Number of Labels: " + mimlDataSet.getNumLabels());
        System.out.println("Number of Attributes: " + mimlDataSet.getNumAttributes());
        System.out.println("Number of AttributesPerBag: " + mimlDataSet.getNumAttributesInABag());
        System.out
                .println("Number of AttributesWithRelational: " + mimlDataSet.getNumAttributesWithRelational());

        // Shows all bags in the dataset
        for (int i = 0; i < mimlDataSet.getNumBags(); i++) {
            Bag bag = null;

            // Recover a bag
            bag = mimlDataSet.getBag(i);
            System.out.println("Bag: " + i);
            System.out.println("\tNumInstances: " + bag.getNumInstances());
            System.out.println("\tNumAttributes: " + bag.numAttributes());
            System.out.println("\tAttributesInABag: " + bag.getNumAttributesInABag());
            System.out.println("\tAttributesWithRelational: " + bag.getNumAttributesWithRelational());

            // Shows all instances in the bag
            for (int j = 0; j < bag.getNumInstances(); j++) {
                // Recovers an instance
                Instance instance = mimlDataSet.getInstance(i, j);
                System.out.println("\t\tInstance: " + j + " NumAttributes: " + instance.numAttributes());
                for (int k = 0; k < instance.numAttributes(); k++)
                    System.out.println("\t\t\tAttribute " + k + ": " + instance.value(k));
            }
        }

        // Shows multi-label metrics
        MLStatistics statsML = new MLStatistics();
        statsML.calculateStats(mimlDataSet);
        System.out.println(statsML.toString());
        System.out.print("\n----------------------------");
        System.out.print("\nCoocurrences - dependences  ");
        System.out.print("\n----------------------------");
        statsML.calculateCoocurrence(mimlDataSet);
        System.out.println(statsML.coocurrenceToString());
        statsML.calculatePhiChi2(mimlDataSet);
        System.out.print("\nPhi correlation matrix");
        System.out.println(statsML.correlationsToString(statsML.getPhi()));
        System.out.print("\nChi correlation matrix");
        System.out.println(statsML.correlationsToString(statsML.getChi2()));
        System.out.println("\nPhi diagram: ");
        statsML.printPhiDiagram(0.05);

        // Shows mil metrics
        MILStatistics statsMIL = new MILStatistics();
        statsMIL.calculateStats(mimlDataSet.getDataSet());
        System.out.println(statsMIL.toString());

    } catch (InvalidDataFormatException e) {
        e.printStackTrace();
    } catch (Exception e) {

        e.printStackTrace();
    }

}

From source file:wekimini.DataGenerator.java

public double getInputValue(int index, int whichInput) {
    Instance in = trainingInputs.instance(index);
    if (in == null || in.numAttributes() < (whichInput + numMetaData)) {
        return Double.NaN;
    }//from   w  ww.j  av a 2  s  . c  o  m
    return in.value(whichInput + numMetaData);
}

From source file:wekimini.DataGenerator.java

public double getOutputValue(int index, int whichOutput) {
    Instance in = trainingOutputs.instance(index);
    if (in == null || in.numAttributes() < (whichOutput + numInputs + numMetaData)) {
        return Double.NaN;
    }/*from   ww w . ja va2  s. c o m*/
    return in.value(whichOutput + numInputs + numMetaData);
}

From source file:wekimini.DataGenerator.java

public double getDummyInputValue(int index, int whichInput) {
    Instance in = dummyInstances.instance(index);
    if (in == null || in.numAttributes() < (whichInput + numMetaData)) {
        return Double.NaN;
    }/*w w w. j  av  a  2s  .c  om*/
    return in.value(whichInput + numMetaData);
}

From source file:wekimini.DataGenerator.java

public double getDummyOutputValue(int index, int whichOutput) {
    Instance in = dummyInstances.instance(index);
    if (in == null || in.numAttributes() < (whichOutput + numInputs + numMetaData)) {
        return Double.NaN;
    }//from  ww  w.  j a  va2 s .c om
    return in.value(whichOutput + numInputs + numMetaData);
}

From source file:wekimini.DataGenerator.java

public double getTempInputValue(int index, int whichInput) {
    Instance in = tempInstances.instance(index);
    if (in == null || in.numAttributes() < (whichInput + numMetaData)) {
        return Double.NaN;
    }// ww w  .j  ava2s  . c om
    return in.value(whichInput + numMetaData);
}

From source file:wekimini.DataGenerator.java

public double getTempOutputValue(int index, int whichOutput) {
    Instance in = tempInstances.instance(index);
    if (in == null || in.numAttributes() < (whichOutput + numInputs + numMetaData)) {
        return Double.NaN;
    }//from www . ja v  a2  s  . c  o  m
    return in.value(whichOutput + numInputs + numMetaData);
}

From source file:wekimini.DataManager.java

public double getOutputValue(int index, int whichOutput) {
    Instance i = allInstances.instance(index);
    if (i == null || i.numAttributes() < (numInputs + numMetaData + whichOutput)) {
        return Double.NaN;
    }//  ww  w  . j  a  v a 2s  .  co m
    if (i.isMissing(numMetaData + numInputs + whichOutput)) {
        return Double.NaN;
    }
    return i.value(numMetaData + numInputs + whichOutput);
    /* if (i.attribute(numMetaData + numInputs + whichOutput).isNumeric()) {
     return i.value(numMetaData + numInputs + whichOutput);
     } else {
     //What we need to do if we allow classes that don't start at 1:
     //return Double.parseDouble(i.attribute(numMetaData + numInputs + whichOutput).value((int)i.value(numMetaData + numInputs + whichOutput)));
     return i.value(numMetaData + numInputs + whichOutput) + 1;
     } */
}

From source file:wekimini.DataManager.java

public double getInputValue(int index, int whichInput) {
    Instance i = allInstances.instance(index);
    if (i == null || i.numAttributes() < (whichInput + numMetaData)) {
        return Double.NaN;
    }/* www  .  j ava2s.  c o  m*/
    return i.value(whichInput + numMetaData);
}

From source file:wekimini.InputGenerator.java

public double getClusterInputValue(int index, int whichInput) {
    Instance in = clusters.instance(index);
    if (in == null || in.numAttributes() < (whichInput)) {
        return Double.NaN;
    }//  w  w w  .ja va2 s. c  o  m
    return in.value(whichInput);
}