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File org.dgpf.gp.regression.optimizer.Optimizer.java

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/*
 * Copyright (c) 2006 Thomas Weise
 * 
 * E-Mail           : tweise@gmx.de
 * Creation Date    : 2006-08-09 09:42:18
 * Original Filename: org.dgpf.gp.regression.optimizer.Optimizer.java
 * Version          : 1.0.0
 * Last modification: 2006-08-09
 *                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.gp.regression.optimizer;

import org.dgpf.gp.regression.base.AggregationContext;
import org.dgpf.gp.regression.base.Calculation;
import org.dgpf.gp.regression.base.CalculationAccessor;
import org.sfc.utils.Typesafe;

/**
 * This optimizer package allows us to optimize and check formulas to see
 * if they make sense at all.
 *
 * @author Thomas Weise
 */

public final  class Optimizer extends CalculationAccessor
  {
/**
 * Optimizer instantiation is a no-no.
 */

  private Optimizer()
    {
    Typesafe.do_not_call();
    }
  
/**
 * Optimize and check a calculation.
 * @param p_source  The source calculation.
 * @param p_context The context.
 * @return  The new optimized calculation or <code>null</code> if the
 *          calculation <code>p_source</code> makes no sense at all.
 */

  public  static  final Calculation optimize 
                                      (final Calculation        p_source,
                                       final AggregationContext p_context)
    {    
    Calculation l_c1, l_c2;
    
    l_c1 = p_source;
    
    do
      {
      l_c2 = l_c1;
      l_c1 = O1.optimize(l_c1);
      if(l_c1 == null) return null;
      l_c1 = O2.optimize(l_c1);
      } while((l_c1 != l_c2) && (l_c1 != null));
    
    return l_c1;
    }
  }

File Information:

file name:Optimizer.java
package:org.dgpf.gp.regression.optimizer
qualified name:org.dgpf.gp.regression.optimizer.Optimizer.java
file type:Java Source File
download location:download http://dgpf.sourceforge.net/source/org/dgpf/gp/regression/optimizer/Optimizer.java
size:2.405 KB (2463 B)
uploaded: 2015-07-22 04:10:56 GMT+0000
last update: 2006-08-17 10:32:28 GMT+0000
last access: 2017-11-19 04:45:05 GMT+0000

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