transfer sparse format arff file to non-sparse format arff file - Java Machine Learning AI

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Description

transfer sparse format arff file to non-sparse format arff file

Demo Code


import java.io.File;

import weka.core.Instances;
import weka.core.converters.ArffSaver;
import weka.core.converters.ConverterUtils.DataSource;
import weka.filters.Filter;
import weka.filters.unsupervised.instance.NonSparseToSparse;

public class sparsedata {
    public static void main(String[] args) throws Exception {
        DataSource source = new DataSource("sparse.arff");
        Instances dataset = source.getDataSet();
        NonSparseToSparse sp = new NonSparseToSparse();

        sp.setInputFormat(dataset);/*from   w w w.ja  va  2s.  c o m*/
        Instances newData = Filter.useFilter(dataset, sp);
        ArffSaver saver = new ArffSaver();
        saver.setInstances(newData);
        saver.setFile(new File("nonsparse.arff"));
        saver.writeBatch();

    }

}

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