Changeset 13936 for branches/HeuristicLab.Problems.MultiObjectiveTestFunctions/HeuristicLab.Problems.MultiObjectiveTestFunctions/3.3/Testfunctions/IHR/IHR.cs

Timestamp:

06/24/16 15:03:51 (8 years ago)

Author:

bwerth

Message:

#1087 added more functions (IHR1-4, IHR6, CIGTAB, ELLI)

Location:

branches/HeuristicLab.Problems.MultiObjectiveTestFunctions/HeuristicLab.Problems.MultiObjectiveTestFunctions/3.3/Testfunctions/IHR

Files:

• . (added)
• IHR.cs (copied) (copied from branches/HeuristicLab.Problems.MultiObjectiveTestFunctions/HeuristicLab.Problems.MultiObjectiveTestFunctions/3.3/Testfunctions/DTLZ/DTLZ.cs) (5 diffs)

branches/HeuristicLab.Problems.MultiObjectiveTestFunctions/HeuristicLab.Problems.MultiObjectiveTestFunctions/3.3/Testfunctions/IHR/IHR.cs

@@ -19 +19 @@
  */
 #endregion
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using HeuristicLab.Common;
 using HeuristicLab.Encodings.RealVectorEncoding;
@@ -26 +28 @@
 namespace HeuristicLab.Problems.MultiObjectiveTestFunctions {
   [StorableClass]
-  public abstract class DTLZ : MultiObjectiveTestFunction {
+  public abstract class IHR : MultiObjectiveTestFunction {
 
 
@@ -35 +37 @@
 
     public override double[,] Bounds(int objectives) {
-      return new double[,] { { 0, 1 } };
+      return new double[,] { { -1, 1 } };
     }
 
@@ -42 +44 @@
     }
 
-    public override int MinimumSolutionLength {
+    public override int MinimumSolutionLength
+    {
       get { return 2; }
     }
-    public override int MaximumSolutionLength {
+    public override int MaximumSolutionLength
+    {
       get { return int.MaxValue; }
     }
 
 
-    public override int MinimumObjectives {
+    public override int MinimumObjectives
+    {
       get { return 2; }
     }
-    public override int MaximumObjectives {
-      get { return int.MaxValue; }
+    public override int MaximumObjectives
+    {
+      get { return 2; }
     }
 
@@ -66 +72 @@
 
     [StorableConstructor]
-    protected DTLZ(bool deserializing) : base(deserializing) { }
-    protected DTLZ(DTLZ original, Cloner cloner) : base(original, cloner) { }
-    public DTLZ() : base(minimumObjectives: 2, minimumSolutionLength: 2, maximumSolutionLength: int.MaxValue) { }
+    protected IHR(bool deserializing) : base(deserializing) { }
+    protected IHR(IHR original, Cloner cloner) : base(original, cloner) { }
+    public IHR() : base(minimumObjectives: 2, minimumSolutionLength: 2, maximumSolutionLength: int.MaxValue) { }
 
-    public abstract override double[] Evaluate(RealVector r, int objecitves);
+    public override double[] Evaluate(RealVector r, int objectives) {
+      if (r.Length < objectives) {
+        throw new ArgumentException("The dimensionality of the problem(ProblemSize) must be larger than or equal to the number of objectives");
+      }
+      RealVector y = Y(r);
+      return new double[] { F1(y), F2(r, y) };
+    }
+    protected abstract double F1(RealVector y);
+    protected abstract double F2(RealVector r, RealVector y);
+    protected abstract double G(RealVector y);
 
+
+    protected double H(double x, RealVector r) {
+      return 1.0 / (1 + Math.Exp(-x / Math.Sqrt(r.Length)));
+    }
+    protected double HF(double x, RealVector r) {
+      double ymax = 1;
+      return Math.Abs(r[0]) <= ymax ? x : 1 + Math.Abs(r[0]);    //replace  with maximum of first column of matrix used in Y(x)
+    }
+    protected double HG(double x) {
+      return (x * x) / (Math.Abs(x) + 0.1);
+    }
+    protected RealVector Y(RealVector x) {
+      return x; //replace with matrix*x
+    }
   }
 }