org.dynamicfactory.property.InstanceFactory.java Source code

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Here is the source code for org.dynamicfactory.property.InstanceFactory.java

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/*
 * Created 27-3-08
 * Copyright Daniel McEnnis, see license.txt
 */

package org.dynamicfactory.property;

import org.mcennis.graphrat.graph.Graph;
import weka.core.Instance;

/**
 * Factory object for serializing and deserializing weka Instance objects
 * @author Daniel McEnnis
 */
public class InstanceFactory implements PropertyValueFactory<Instance> {

    @Override
    public Instance importFromString(String data, Graph g) {
        String[] split = data.split(",");
        double weight = Double.parseDouble(split[0]);
        double[] values = new double[split.length - 1];
        for (int i = 1; i < split.length; ++i) {
            values[i - 1] = Double.parseDouble(split[i]);
        }
        Instance ret = new Instance(weight, values);
        return ret;
    }

    @Override
    public String exportToString(Instance type, Graph g) {
        double weight = type.weight();
        double[] values = type.toDoubleArray();
        StringBuffer buffer = new StringBuffer();
        buffer.append(Double.toString(weight));
        for (int i = 0; i < values.length; ++i) {
            buffer.append(",").append(Double.toString(values[i]));
        }
        return buffer.toString();
    }

}