nlpsolver/ThirdParty/EvolutionarySolver/src/net/adaptivebox/space/DesignDim.java

   1 /**
   2  * Description: provide the information for goodness evaluation of a target
   3  *
   4  * @ Author        Create/Modi     Note
   5  * Xiaofeng Xie    Mar  1, 2003
   6  * Xiaofeng Xie    May  3, 2004    Add grain value
   7  * Xiaofeng Xie    May 11, 2004    Add crowd distance
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * Please acknowledge the author(s) if you use this code in any way.
  20  */
  21
  22 package net.adaptivebox.space;
  23 import net.adaptivebox.global.*;
  24
  25 public class DesignDim {
  26   // To discrete space with the given step. For example, for an integer variable,
  27   // The grain value can be set as 1.
  28   public double grain = 0;
  29   public BasicBound paramBound = new BasicBound(); //the range of a parameter
  30
  31
  32   public void importData(DesignDim ipr) {
  33     this.grain = ipr.grain;
  34     this.paramBound = ipr.paramBound;
  35   }
  36
  37   public boolean isDiscrete() {
  38     return grain!=0;
  39   }
  40
  41   public double getGrainedValue(double value) {
  42     if(grain==0) {
  43       return value;
  44     } else if(grain>0) {
  45       return paramBound.minValue+Math.rint((value-paramBound.minValue)/grain)*grain;
  46     } else {
  47       return paramBound.maxValue-Math.rint((paramBound.maxValue-value)/grain)*grain;
  48     }
  49   }
  50
  51 }
  52