Changeset 14612 for branches/MOCMAEvolutionStrategy/HeuristicLab.Algorithms.MOCMAEvolutionStrategy

Timestamp:

01/26/17 14:31:45 (8 years ago)

Author:

bwerth

Message:

#2592 made initialization solutionspace-scaling invariant

File:

• branches/MOCMAEvolutionStrategy/HeuristicLab.Algorithms.MOCMAEvolutionStrategy/3.3/MOCMASEvolutionStrategy.cs (modified) (1 diff)

branches/MOCMAEvolutionStrategy/HeuristicLab.Algorithms.MOCMAEvolutionStrategy/3.3/MOCMASEvolutionStrategy.cs

@@ -328 +328 @@
     #region Initialization
     private MOCMAESIndividual InitializeIndividual(RealVector x) {
-      var zeros = new RealVector(x.Length);
+      var zeros = new RealVector(Enumerable.Range(0, Problem.Encoding.Length).Select(i => (Problem.Encoding.Bounds[i, 1] + Problem.Encoding.Bounds[i, 0]) / 2).ToArray());
       var identity = new double[x.Length, x.Length];
-      for (var i = 0; i < x.Length; i++) identity[i, i] = 1;
+      for (var i = 0; i < x.Length; i++) identity[i, i] = (Problem.Encoding.Bounds[i % Problem.Encoding.Bounds.Rows, 1] - Problem.Encoding.Bounds[i % Problem.Encoding.Bounds.Rows, 0]);
       return new MOCMAESIndividual(x, internals.TargetSuccessProbability, InitialSigma, zeros, identity, internals);
     }