transformationapply.java

一个数据挖掘软件ALPHAMINERR的整个过程的JAVA版源代码

/*
 *    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 2 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, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

 /**
  * Title: XELOPES Data Mining Library
  * Description: The XELOPES library is an open platform-independent and data-source-independent library for Embedded Data Mining.
  * Copyright: Copyright (c) 2002 Prudential Systems Software GmbH
  * Company: ZSoft (www.zsoft.ru), Prudsys (www.prudsys.com)
  * @author Carsten Weisse
  * @author Michael Thess
  * @version 1.0
  */
package com.prudsys.pdm.Examples;

import java.io.FileReader;

import com.prudsys.pdm.Core.MiningDataSpecification;
import com.prudsys.pdm.Input.MiningFilterStream;
import com.prudsys.pdm.Input.MiningInputStream;
import com.prudsys.pdm.Input.Records.Arff.MiningArffStream;

/**
 * Applies a transformations from the PMML file 'Transformation.xml'
 * to a data set.
 */
public class TransformationApply extends BasisExample
{
  /**
   * Empty constructor.
   */
  public TransformationApply() {

  }

  /**
   * Run the example of this class.
   *
   * @throws Exception error while example is running
   */
  public void runExample() throws Exception {

    // Read transformation from PMML file:
    MiningDataSpecification metaData = new MiningDataSpecification();
    FileReader reader = new FileReader("data/pmml/Transformation.xml");
    metaData.readPmml(reader);
    System.out.println("-------------> PMML trafo read successfully");

    // Open data source and get metadata:
    MiningInputStream inputData = new MiningArffStream( "data/arff/iris.arff");

    // Create mining filter stream from data source and our transformer:
    MiningInputStream filter = new MiningFilterStream( inputData, metaData.getMiningTransformationActivity() );

    // Display transformed data:
    System.out.println("Transformed data: ");
    System.out.println( filter );
  }

  /**
   * Example of applying transformations to new data.
   *
   * @param args (ignored)
   */
  public static void main(String[] args)
  {
      try {
        new TransformationApply().runExample();
      }
      catch (Exception ex)
      {
        ex.printStackTrace();
      };
  }
}