Example usage for org.apache.mahout.math NamedVector getDelegate

Introduction

In this page you can find the example usage for org.apache.mahout.math NamedVector getDelegate.

Prototype

public Vector getDelegate() 

Source Link

Usage

From source file:csvToSequence.ConvertToSeqLargeTxtVec.java

public static void main(String[] args) throws IOException {
    String filename = "/home/ivan/WorkDir/ccFraud.csv";
    String outputfilename = "/home/ivan/WorkDir/part-0000";

    SequenceFile.Writer writer;/* w w w  .j  a  v a2  s.  com*/
    Configuration conf = new Configuration();

    FileSystem fs = FileSystem.get(conf);
    Path path = new Path(outputfilename);

    writer = new SequenceFile.Writer(fs, conf, path, Text.class, VectorWritable.class);
    VectorWritable vec = new VectorWritable();

    BufferedReader br = new BufferedReader(new FileReader(filename));
    String s;
    br.readLine(); //skip line

    while ((s = br.readLine()) != null) {
        String[] value = s.split(",");
        double[] numValue = new double[8];

        for (int i = 0; i < 8; i++)
            numValue[i] = Double.parseDouble(value[i]);

        if (Integer.parseInt(value[8]) == 1)
            value[8] = "Fraud/" + value[8];
        else
            value[8] = "Normal/" + value[8];

        NamedVector oneV = new NamedVector(new DenseVector(numValue), value[8]);

        vec.set(oneV.getDelegate());
        writer.append(new Text(oneV.getName()), vec);

    }
    writer.close();
}

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From source file:csvToSequence.ConvertToSeqTextVecWritable.java

public static void main(String[] args) throws FileNotFoundException, IOException {

    String filename = "/home/ivan/WorkDir/ccFraud.csv";
    String outputfilename = "/home/ivan/WorkDir/part-0000";

    SequenceFile.Writer writer;/*from  w ww  . j av  a 2s .c o  m*/
    Configuration conf = new Configuration();
    List<NamedVector> namedVectors = new ArrayList<>();
    /*Integer i = 1;
            
    CSVVectorIterator vectorCSVVectorIterator = new CSVVectorIterator(new FileReader(filename));
    //System.out.println("Densvector"+vec.next()):
            
            
            
    while(vectorCSVVectorIterator.hasNext()){
    NamedVector vecIt = new NamedVector(vectorCSVVectorIterator.next(),i.toString());
    namedVectors.add(vecIt);
    i++;
    }*/
    BufferedReader br = new BufferedReader(new FileReader(filename));
    String s;
    br.readLine(); //skip line
    while ((s = br.readLine()) != null) {
        String[] value = s.split(",");
        double[] numValue = new double[8];

        for (int i = 0; i < 8; i++)
            numValue[i] = Double.parseDouble(value[i]);

        if (Integer.parseInt(value[8]) == 1)
            value[8] = "Fraud/" + value[8];
        else
            value[8] = "Normal/" + value[8];

        NamedVector oneV = new NamedVector(new DenseVector(numValue), value[8]);
        namedVectors.add(oneV);

    }

    FileSystem fs = FileSystem.get(conf);
    Path path = new Path(outputfilename);

    writer = new SequenceFile.Writer(fs, conf, path, Text.class, VectorWritable.class);

    VectorWritable vec = new VectorWritable();

    for (NamedVector iter : namedVectors) {
        vec.set(iter.getDelegate());
        writer.append(new Text(iter.getName()), vec);
    }

    writer.close();

    /*try (SequenceFile.Reader reader = new SequenceFile.Reader(fs,path, conf)) {
    Text key = new Text();
    VectorWritable value = new VectorWritable();
    while (reader.next(key, value)) {
                
        System.out.println(key + " "+ value);
    }
    }*/

}

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