nlpsolver/ThirdParty/EvolutionarySolver/src/net/adaptivebox/knowledge/SearchPoint.java

   1 /**
   2  * Description: provide the location and encoded goodness information
   3  *
   4  * @ Author        Create/Modi     Note
   5  * Xiaofeng Xie    Mar 1, 2003
   6  * Xiaofeng Xie    May 11, 2004
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * Please acknowledge the author(s) if you use this code in any way.
  19  */
  20 package net.adaptivebox.knowledge;
  21
  22 import net.adaptivebox.global.*;
  23 import net.adaptivebox.space.*;
  24 import net.adaptivebox.encode.*;
  25
  26 public class SearchPoint extends BasicPoint implements IEncodeEngine {
  27   //store the encode information for goodness evaluation
  28   //encodeInfo[0]: the sum of constraints (if it equals to 0, then be a feasible point)
  29   //encodeInfo[1]: the value of objective function
  30   private double[] encodeInfo = new double[2];
  31   private double objectiveValue;
  32
  33   public SearchPoint(int dim) {
  34     super(dim);
  35     for(int i=0; i<encodeInfo.length; i++) {
  36       encodeInfo[i] = BasicBound.MAXDOUBLE;
  37     }
  38   }
  39
  40   public double[] getEncodeInfo() {
  41     return encodeInfo;
  42   }
  43
  44   private void importEncodeInfo(double[] info) {
  45     for(int i=0; i<encodeInfo.length; i++) {
  46       encodeInfo[i] = info[i];
  47     }
  48   }
  49
  50   private void importEncodeInfo(IEncodeEngine point) {
  51     importEncodeInfo(point.getEncodeInfo());
  52   }
  53
  54   //Replace self by given point
  55   public void importPoint(SearchPoint point) {
  56     importLocation(point);
  57     importEncodeInfo(point);
  58     setObjectiveValue(point.getObjectiveValue());
  59   }
  60
  61   public double getObjectiveValue() {
  62       return objectiveValue;
  63   }
  64
  65   public void setObjectiveValue(double objectiveValue) {
  66       this.objectiveValue = objectiveValue;
  67   }
  68
  69   public boolean isFeasible() {
  70       return encodeInfo[0] == 0; //no constraint violations
  71   }
  72
  73   public void outputSelf() {
  74     System.out.println("#--> Location:");
  75     OutputMethods.outputVector(getLocation());
  76     System.out.println("#--> (CON & OPTIM):");
  77     OutputMethods.outputVector(getEncodeInfo());
  78   }
  79 }