Changeset 3781 for trunk/sources/HeuristicLab.Problems.TestFunctions/3.3/Evaluators/LevyEvaluator.cs

Timestamp:

05/11/10 19:18:32 (14 years ago)

Author:

abeham

Message:

#934

• added BestKnownSolution to test functions
• added unit tests

File:

• trunk/sources/HeuristicLab.Problems.TestFunctions/3.3/Evaluators/LevyEvaluator.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Problems.TestFunctions/3.3/Evaluators/LevyEvaluator.cs

@@ -65 +65 @@
     }
 
+    public override RealVector GetBestKnownSolution(int dimension) {
+      if (dimension < 2) throw new ArgumentException(Name + ": This function is not defined for 1 dimension.");
+      RealVector result = new RealVector(dimension);
+      for (int i = 0; i < dimension; i++) result[i] = 1;
+      return result;
+    }
     /// <summary>
     /// Evaluates the test function for a specific <paramref name="point"/>.
@@ -80 +86 @@
 
       s = Math.Sin(Math.PI * z[0]);
+      if (Math.Abs(s) < 1e-15) s = 0; // Math.Sin(Math.PI) == 0.00000000000000012246063538223773
       s *= s;