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source: trunk/sources/HeuristicLab.Encodings.RealVectorEncoding/3.3/ParticleOperators/RealVectorParticleUpdater.cs @ 5592

Last change on this file since 5592 was 5592, checked in by epitzer, 12 years ago

Additional improvements to PSO (#852)

  • simplify and clean up RealVectorSwarmUpdater
  • make the RealVectorParticleCreator an AlgorithmOperator
  • standardize naming of local variables in ParticleUpdaters
  • remove default parameter values from main loop
  • new implementation of MultiPSOTopologyUpdater (using shuffling)
File size: 6.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Operators;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Encodings.RealVectorEncoding {
30
31  [Item("RealVectorParticleUpdater", "Updates a certain particle taking the current position and velocity into account, as well as the best point and the best point in a local neighborhood.")]
32  [StorableClass]
33  public abstract class RealVectorParticleUpdater : SingleSuccessorOperator, IRealVectorParticleUpdater {
34
35    public override bool CanChangeName {
36      get { return false; }
37    }
38
39    #region Parameter properties
40    public ILookupParameter<IRandom> RandomParameter {
41      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
42    }
43    public ILookupParameter<RealVector> VelocityParameter {
44      get { return (ILookupParameter<RealVector>)Parameters["Velocity"]; }
45    }
46    public ILookupParameter<RealVector> PersonalBestParameter {
47      get { return (ILookupParameter<RealVector>)Parameters["PersonalBest"]; }
48    }
49    public ILookupParameter<RealVector> NeighborBestParameter {
50      get { return (ILookupParameter<RealVector>)Parameters["NeighborBest"]; }
51    }
52    public LookupParameter<RealVector> BestPointParameter {
53      get { return (LookupParameter<RealVector>)Parameters["BestPoint"]; }
54    }
55    public ILookupParameter<RealVector> RealVectorParameter {
56      get { return (ILookupParameter<RealVector>)Parameters["RealVector"]; }
57    }
58    public ILookupParameter<DoubleMatrix> BoundsParameter {
59      get { return (ILookupParameter<DoubleMatrix>)Parameters["Bounds"]; }
60    }
61    public ILookupParameter<DoubleMatrix> VelocityBoundsParameter {
62      get { return (ILookupParameter<DoubleMatrix>)Parameters["VelocityBounds"]; }
63    }
64    public ILookupParameter<DoubleValue> InertiaParameter {
65      get { return (ILookupParameter<DoubleValue>)Parameters["Inertia"]; }
66    }
67    public ILookupParameter<DoubleValue> PersonalBestAttractionParameter {
68      get { return (ILookupParameter<DoubleValue>)Parameters["PersonalBestAttraction"]; }
69    }
70    public ILookupParameter<DoubleValue> NeighborBestAttractionParameter {
71      get { return (ILookupParameter<DoubleValue>)Parameters["NeighborBestAttraction"]; }
72    }
73    #endregion
74
75    #region Parameter Values
76    protected IRandom Random {
77      get { return RandomParameter.ActualValue; }
78    }
79    protected RealVector Velocity {
80      get { return VelocityParameter.ActualValue; }
81      set { VelocityParameter.ActualValue = value; }
82    }
83    protected RealVector PersonalBest {
84      get { return PersonalBestParameter.ActualValue; }
85    }
86    protected RealVector BestPoint {
87      get { return BestPointParameter.ActualValue; }
88    }
89    protected RealVector RealVector {
90      get { return RealVectorParameter.ActualValue; }
91      set { RealVectorParameter.ActualValue = value; }
92    }
93    protected RealVector NeighborBest {
94      get { return NeighborBestParameter.ActualValue; }
95    }
96    protected DoubleMatrix Bounds {
97      get { return BoundsParameter.ActualValue; }
98    }
99    protected DoubleMatrix VelocityBounds {
100      get { return VelocityBoundsParameter.ActualValue; }
101    }
102    protected DoubleValue Inertia {
103      get { return InertiaParameter.ActualValue; }
104    }
105    protected DoubleValue PersonalBestAttraction {
106      get { return PersonalBestAttractionParameter.ActualValue; }
107    }
108    protected DoubleValue NeighborBestAttraction {
109      get { return NeighborBestAttractionParameter.ActualValue; }
110    }
111    #endregion
112
113    #region Construction & Cloning
114    [StorableConstructor]
115    protected RealVectorParticleUpdater(bool deserializing) : base(deserializing) { }
116    protected RealVectorParticleUpdater(RealVectorParticleUpdater original, Cloner cloner) : base(original, cloner) { }
117    public RealVectorParticleUpdater()
118      : base() {
119      Parameters.Add(new LookupParameter<IRandom>("Random", "Random number generator."));
120      Parameters.Add(new LookupParameter<RealVector>("RealVector", "Particle's current solution"));
121      Parameters.Add(new LookupParameter<RealVector>("Velocity", "Particle's current velocity."));
122      Parameters.Add(new LookupParameter<RealVector>("PersonalBest", "Particle's personal best solution."));
123      Parameters.Add(new LookupParameter<RealVector>("BestPoint", "Global best position."));
124      Parameters.Add(new LookupParameter<RealVector>("NeighborBest", "Best neighboring solution."));
125      Parameters.Add(new LookupParameter<DoubleMatrix>("Bounds", "The lower and upper bounds for each dimension of the position vector for the current problem."));
126      Parameters.Add(new LookupParameter<DoubleMatrix>("VelocityBounds", "Upper and lower bounds for the particle's velocity vector."));
127      Parameters.Add(new LookupParameter<DoubleValue>("Inertia", "The weight for the particle's velocity vector."));
128      Parameters.Add(new LookupParameter<DoubleValue>("PersonalBestAttraction", "The weight for the particle's personal best position."));
129      Parameters.Add(new LookupParameter<DoubleValue>("NeighborBestAttraction", "The weight for the global best position."));
130    }
131    #endregion
132  }
133}
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