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File org.dgpf.search.algorithms.sa.adaptation.DefaultSAAdapter.java

Here you can find all the information about the file org.dgpf.search.algorithms.sa.adaptation.DefaultSAAdapter.java. You may explore it here or download it onto your local disk.
/*
 * Copyright (c) 2006 Thomas Weise
 * 
 * E-Mail           : tweise@gmx.de
 * Creation Date    : 2006-06-05 13:27:42
 * Created by       : Stefan Niemczyk, Marc Kirchhoff
 * Original Filename: org.dgpf.search.algorithms.sa.adaptation.DefaultSAAdapter.java
 * Version          : 1.0.1
 * Last modification: 2006-06-22
 *                by: Thomas Weise
 * 
 * License          : GNU LESSER GENERAL PUBLIC LICENSE
 *                    Version 2.1, February 1999
 *                    You should have received a copy of this license along
 *                    with this library; if not, write to the Free Software
 *                    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *                    MA 02111-1307, USA or download the license under
 *                    http://www.gnu.org/copyleft/lesser.html.
 *                    
 * Warranty         : This software is provided "as is" without any
 *                    warranty; without even the implied warranty of
 *                    merchantability or fitness for a particular purpose.
 *                    See the Gnu Lesser General Public License for more
 *                    details.
 */


package org.dgpf.search.algorithms.sa.adaptation;

import org.dgpf.search.algorithms.sa.SAParameters;
import org.dgpf.search.algorithms.sa.ta.TemperatureAdaptionStrategy;
import org.dgpf.search.api.AdaptationStrategy;
import org.dgpf.search.api.SearchParameters;
import org.dgpf.search.api.SearchState;
import org.dgpf.search.api.adaptation.DefaultSearchAdapter;
import org.sfc.utils.Typesafe;

/**
 * The default simulated annealing adaptation strategy.
 *
 * @author Stefan Niemczyk, Marc Kirchhoff
 */

public class DefaultSAAdapter extends DefaultSearchAdapter
  {
/**
 * The serial version uid.
 */

  private static final long serialVersionUID            = 1;
/**
 * The default update threshold.
 */

  public  static  final long  DEFAULT_SA_UPDATE_THRESHOLD  = 
                                      DEFAULT_UPDATE_THRESHOLD * 10;
  
/**
 * Create a new stateful adaptation strategy.
 * @param p_parameters  The search parameter set to be adapted.
 */

  public DefaultSAAdapter(final SearchParameters<?> p_parameters)
    {
    super(p_parameters);

    this.set_update_threshold(DEFAULT_SA_UPDATE_THRESHOLD);
    }

/**
 * Create a new stateful adaptation strategy by using another search
 * adaptation strategy as blueprint.
 * @param p_parameters  The search parameter set to be adapted.
 * @param p_strategy    The blueprint to copy the internal data from.
 */

  public  DefaultSAAdapter(final SearchParameters<?> p_parameters,
                           final AdaptationStrategy  p_strategy)
    {
    super(p_parameters, p_strategy);
    }
  
/**
 * This method will be called whenever the search parameters perform a
 * reset, meaning that the search level is set back to 0.
 */

  @Override
  protected void  reset ()
    {
    SAParameters<?>  l_sap;
    
    l_sap=Typesafe.cast(this.get_parameters());
    
    super.reset();
    
    l_sap.set_temperature(l_sap.get_start_temperature());
    }
  
  /**
 * This method will be called by the search engine whenever it feels like
 * it is time to adapt the current search parameters to the current search
 * state. If you override this method, you must also declare your class
 * as instance of <code>ICloneable</code>.
 * @param p_state The current state of the search.
 * @return  <code>true</code> if and only if the update level should be
 *          resetted, <code>false</code> if everything should continue
 *          normal.
 * @see SearchState#get_update_level()
 */

  @Override
  protected boolean  adapt (final SearchState<?> p_state)
    {
    SAParameters<?>             l_sap;
    TemperatureAdaptionStrategy l_tas;
    
    l_sap = Typesafe.cast(this.get_parameters());
    l_tas = l_sap.get_temperature_adaption_strategy();
    
    if(super.adapt(p_state)) return true;
    
    l_tas.adapt_temperature(l_sap);

    return false;
    }
  
/**
 * Assign the internal data of this adaptation strategy to another one.
 * This method copies the settings, but not the statistics.
 * @param p_data  The adaptation strategy to assign to.
 */

  @Override
  protected void  assign  (final AdaptationStrategy p_data)
    {
    super.assign(p_data);
    }
  }

File Information:

file name:DefaultSAAdapter.java
package:org.dgpf.search.algorithms.sa.adaptation
qualified name:org.dgpf.search.algorithms.sa.adaptation.DefaultSAAdapter.java
file type:Java Source File
download location:download http://dgpf.sourceforge.net/source/org/dgpf/search/algorithms/sa/adaptation/DefaultSAAdapter.java
size:4.324 KB (4428 B)
uploaded: 2018-01-07 12:03:35 GMT+0000
last update: 2006-06-22 13:15:35 GMT+0000
last access: 2018-01-07 12:03:35 GMT+0000

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Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/project-web/dgpf/htdocs/scripts/datetime.php on line 16

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/project-web/dgpf/htdocs/scripts/datetime.php on line 16
last modified at 2018-01-07 12:03:34 GMT+0000
Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/project-web/dgpf/htdocs/scripts/datetime.php on line 19

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/project-web/dgpf/htdocs/scripts/datetime.php on line 19
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