Changeset 5209 for branches/PSO/HeuristicLab.Algorithms.ParticleSwarmOptimization/3.3/ParticleUpdater.cs

Timestamp:

01/04/11 16:34:11 (14 years ago)

Author:

epitzer

Message:

Configurable ParticleUpdater, and topologies, different topology initializers and support for dynamic topology changes (#852)

File:

• branches/PSO/HeuristicLab.Algorithms.ParticleSwarmOptimization/3.3/ParticleUpdater.cs (modified) (6 diffs)

branches/PSO/HeuristicLab.Algorithms.ParticleSwarmOptimization/3.3/ParticleUpdater.cs

@@ -31 +31 @@
 
   [StorableClass]
-  public class ParticleUpdater : SingleSuccessorOperator {
+  public abstract class ParticleUpdater : SingleSuccessorOperator, IParticleUpdater {
 
     #region Parameter properties
@@ -45 +45 @@
     public LookupParameter<RealVector> PersonalBestPointParameter {
       get { return (LookupParameter<RealVector>)Parameters["PersonalBestPoint"]; }
+    }
+    public LookupParameter<RealVector> BestNeighborPointParameter {
+      get { return (LookupParameter<RealVector>)Parameters["BestNeighborPoint"]; }
     }
     public LookupParameter<RealVector> BestPointParameter {
@@ -84 +87 @@
       get { return BestPointParameter.ActualValue; }
     }
+    public RealVector BestNeighborPoint {
+      get { return BestNeighborPointParameter.ActualValue; }
+    }
     public DoubleMatrix Bounds {
       get { return BoundsParameter.ActualValue; }
@@ -101 +107 @@
     #endregion
 
+    public override bool CanChangeName {
+      get { return false; }
+    }
+
     #region Construction & Cloning
 
@@ -116 +126 @@
       Parameters.Add(new LookupParameter<RealVector>("PersonalBestPoint", "Particle's personal best position"));
       Parameters.Add(new LookupParameter<RealVector>("BestPoint", "Global best position"));
+      Parameters.Add(new LookupParameter<RealVector>("BestNeighborPoint", "Best neighboring position"));
       Parameters.Add(new LookupParameter<DoubleMatrix>("Bounds", "The lower and upper bounds for each dimension of the position vector for the current problem."));
       Parameters.Add(new LookupParameter<DoubleMatrix>("VelocityBounds", "Upper and lower bounds for the particle's velocity vector."));
@@ -123 +134 @@
     }
 
-    public override IDeepCloneable Clone(Cloner cloner) {
-      return new ParticleUpdater(this, cloner);
-    }
-
     #endregion
 
-    public override IOperation Apply() {
-      RealVector velocity = new RealVector(Velocity.Length);
-      RealVector position = new RealVector(Point.Length);
-      double r_p = Random.NextDouble();
-      double r_g = Random.NextDouble();
-      for (int i = 0; i < velocity.Length; i++) {
-        velocity[i] =
-          Velocity[i] * Omega +
-          (PersonalBestPoint[i] - Point[i]) * Phi_P * r_p +
-          (BestPoint[i] - Point[i]) * Phi_G * r_g;
-      }
-      BoundsChecker.Apply(velocity, VelocityBounds);
-      for (int i = 0; i < velocity.Length; i++) {
-        position[i] = Point[i] + velocity[i];
-      }
-      BoundsChecker.Apply(position, Bounds);
-      Point = position;
-      Velocity = velocity;
-
-      return base.Apply();
-    }
-
-    public override bool CanChangeName {
-      get { return false; }
-    }
   }
 }