Changeset 15091 for trunk/sources/HeuristicLab.Algorithms.ParticleSwarmOptimization/3.3/RingTopologyInitializer.cs

Timestamp:

06/29/17 15:26:16 (7 years ago)

Author:

abeham

Message:

#2797:

• Updated PSO to make it more compatible with SPSO 2011
• Removed truncation of velocity vector and instead rescaled it given the maximum velocity
• Added non-zero initial velocity according to SPSO 2011
• Removed complicated bouncing code due to box constraints and instead implemented as described in SPSO 2011
• Calculating neighbor best has been changed to use personal best
• Avoiding local and global particle update and instead relying on neighborbest
• More randomization during velocity update by using a separate random numbers per dimension
• Reusing problem specific solution creator in RealVectorParticleCreator instead of always using UniformRandomRealVectorCreator

File:

• trunk/sources/HeuristicLab.Algorithms.ParticleSwarmOptimization/3.3/RingTopologyInitializer.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Algorithms.ParticleSwarmOptimization/3.3/RingTopologyInitializer.cs

@@ -43 +43 @@
 
     public override IOperation Apply() {
-      ItemArray<IntArray> neighbors = new ItemArray<IntArray>(SwarmSize);
-      for (int i = 0; i < SwarmSize; i++) {
-        neighbors[i] = new IntArray(new[] { (SwarmSize + i - 1) % SwarmSize, (i + 1) % SwarmSize });
+      var swarmSize = SwarmSizeParameter.ActualValue.Value;
+
+      ItemArray<IntArray> neighbors = new ItemArray<IntArray>(swarmSize);
+      for (int i = 0; i < swarmSize; i++) {
+        neighbors[i] = new IntArray(new[] { (swarmSize + i - 1) % swarmSize, (i + 1) % swarmSize });
       }
-      Neighbors = neighbors;
+      NeighborsParameter.ActualValue = neighbors;
       return base.Apply();
     }