com.github.fracpete.multisearch.setupgenerator.J48ConfidenceFactor.java Source code

Introduction

Here is the source code for com.github.fracpete.multisearch.setupgenerator.J48ConfidenceFactor.java

Source

/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * J48ConfidenceFactor.java
 * Copyright (C) 2016 University of Waikato, Hamilton, NZ
 */

package com.github.fracpete.multisearch.setupgenerator;

import weka.classifiers.meta.MultiSearch;
import weka.classifiers.trees.J48;
import weka.core.SetupGenerator;
import weka.core.Utils;
import weka.core.setupgenerator.AbstractParameter;
import weka.core.setupgenerator.MathParameter;

import java.io.Serializable;
import java.util.Enumeration;

/**
 * Varies the confidence factor of the J48 classifier.
 *
 * @author FracPete (fracpete at waikato dot ac dot nz)
 * @version $Revision$
 */
public class J48ConfidenceFactor {

    /**
     * Outputs the commandlines.
     *
     * @param args   the commandline options
     * @throws Exception   if setup generator fails for some reason
     */
    public static void main(String[] args) throws Exception {
        // configure classifier we want to generate setups for
        J48 j48 = new J48();

        // configure generator
        MathParameter conf = new MathParameter();
        conf.setProperty("confidenceFactor");
        conf.setBase(10);
        conf.setMin(0.05);
        conf.setMax(0.75);
        conf.setStep(0.05);
        conf.setExpression("I");
        MultiSearch multi = new MultiSearch();
        multi.setClassifier(j48);
        SetupGenerator generator = new SetupGenerator();
        generator.setBaseObject(j48);
        generator.setParameters(new AbstractParameter[] { conf });

        // output configuration
        System.out.println("\nSetupgenerator commandline:\n" + Utils.toCommandLine(generator));

        // output commandlines
        System.out.println("\nCommandlines:\n");
        Enumeration<Serializable> enm = generator.setups();
        while (enm.hasMoreElements())
            System.out.println(Utils.toCommandLine(enm.nextElement()));
    }
}