weka.experiment.RemoteExperimentSubTask Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of weka-dev Show documentation

The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

There is a newer version: 3.9.6

Show newest version

/*
 *   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 .
 */

/*
 *    RemoteExperimentSubTask.java
 *    Copyright (C) 2000-2012 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.experiment;

import java.io.File;

import weka.core.RevisionHandler;
import weka.core.RevisionUtils;
import weka.core.SerializedObject;

/**
 * Class to encapsulate an experiment as a task that can be executed on a remote
 * host.
 * 
 * @author Mark Hall ([email protected])
 * @version $Revision: 13907 $
 */
public class RemoteExperimentSubTask implements Task, RevisionHandler {

  /** ID added to avoid warning */
  private static final long serialVersionUID = -1674092706571603720L;

  /* Info on the task */
  private TaskStatusInfo m_result = new TaskStatusInfo();

  /* The (sub) experiment to execute */
  private Experiment m_experiment;

  private SerializedObject m_serializedExp;

  public RemoteExperimentSubTask() {
    m_result.setStatusMessage("Not running.");
    m_result.setExecutionStatus(TaskStatusInfo.TO_BE_RUN);
  }

  /**
   * Set the experiment for this sub task
   * 
   * @param task the experiment
   */
  public void setExperiment(Experiment task) {
    // m_experiment = task;
    try {
      m_serializedExp = new SerializedObject(task);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  /**
   * Get the experiment for this sub task
   * 
   * @return this sub task's experiment
   */
  public Experiment getExperiment() {
    if (m_experiment != null) {
      return m_experiment;
    } else {
      m_experiment = (Experiment) m_serializedExp.getObject();
      return m_experiment;
    }
  }

  /**
   * Run the experiment
   */
  @Override
  public void execute() {
    m_experiment = (Experiment) m_serializedExp.getObject();
    // FastVector result = new FastVector();
    m_result = new TaskStatusInfo();
    m_result.setStatusMessage("Running...");
    String goodResult = "(sub)experiment completed successfully";
    String subTaskType;
    if (m_experiment.getRunLower() != m_experiment.getRunUpper()) {
      subTaskType = "(dataset "
        + ((File) m_experiment.getDatasets().elementAt(0)).getName();
    } else {
      subTaskType = "(exp run # " + m_experiment.getRunLower();
    }
    try {
      System.err.println("Initializing " + subTaskType + ")...");
      m_experiment.initialize();
      System.err.println("Iterating " + subTaskType + ")...");
      // Do not invoke runExperiment(): every exception will be lost
      while (m_experiment.hasMoreIterations()) {
        m_experiment.nextIteration();
      }
      System.err.println("Postprocessing " + subTaskType + ")...");
      m_experiment.postProcess();
    } catch (Exception ex) {
      ex.printStackTrace();
      String badResult = "(sub)experiment " + subTaskType + ") failed : "
        + ex.toString();
      m_result.setExecutionStatus(TaskStatusInfo.FAILED);
      // m_result.addElement(new Integer(RemoteExperiment.FAILED));
      // m_result.addElement(badResult);
      m_result.setStatusMessage(badResult);
      m_result.setTaskResult("Failed");
      // return m_result;
      return;
    }
    // m_result.addElement(new Integer(RemoteExperiment.FINISHED));
    // m_result.addElement(goodResult);
    m_result.setExecutionStatus(TaskStatusInfo.FINISHED);
    m_result.setStatusMessage(goodResult + " " + subTaskType + ").");
    m_result.setTaskResult("No errors");
    // return m_result;
  }

  @Override
  public TaskStatusInfo getTaskStatus() {
    return m_result;
  }

  /**
   * Returns the revision string.
   * 
   * @return the revision
   */
  @Override
  public String getRevision() {
    return RevisionUtils.extract("$Revision: 13907 $");
  }
}