source: branches/2936_GQAPIntegration/HeuristicLab.Encodings.IntegerVectorEncoding/3.3/StrategyParameters/StdDevStrategyVectorCreator.cs @ 16710

Last change on this file since 16710 was 16710, checked in by gkronber, 3 months ago

#2936: merged r15682 & r16117:16658 from trunk/HeuristicLab.Encodings.IntegerVectorEncoding to branch/HeuristicLab.Encodings.IntegerVectorEncoding

File size: 3.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 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.Optimization;
27using HeuristicLab.Parameters;
28using HEAL.Attic;
29
30namespace HeuristicLab.Encodings.IntegerVectorEncoding {
31  [Item("StdDevStrategyVectorCreator", "Creates the endogeneous strategy parameters.")]
32  [StorableType("3357CE2D-EC8C-4DD7-B51A-FA72D558EA91")]
33  public class StdDevStrategyVectorCreator : SingleSuccessorOperator, IStochasticOperator, IIntegerVectorStdDevStrategyParameterCreator {
34    public override bool CanChangeName {
35      get { return false; }
36    }
37    public ILookupParameter<IRandom> RandomParameter {
38      get { return (LookupParameter<IRandom>)Parameters["Random"]; }
39    }
40    public ILookupParameter<DoubleArray> StrategyParameterParameter {
41      get { return (ILookupParameter<DoubleArray>)Parameters["StrategyParameter"]; }
42    }
43    public IValueLookupParameter<IntValue> LengthParameter {
44      get { return (IValueLookupParameter<IntValue>)Parameters["Length"]; }
45    }
46    public IValueLookupParameter<DoubleMatrix> BoundsParameter {
47      get { return (IValueLookupParameter<DoubleMatrix>)Parameters["Bounds"]; }
48    }
49
50    [StorableConstructor]
51    protected StdDevStrategyVectorCreator(StorableConstructorFlag _) : base(_) { }
52    protected StdDevStrategyVectorCreator(StdDevStrategyVectorCreator original, Cloner cloner) : base(original, cloner) { }
53    public StdDevStrategyVectorCreator()
54      : base() {
55      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator to use."));
56      Parameters.Add(new LookupParameter<DoubleArray>("StrategyParameter", "The crossed strategy parameter."));
57      Parameters.Add(new ValueLookupParameter<IntValue>("Length", "The length of the vector."));
58      Parameters.Add(new ValueLookupParameter<DoubleMatrix>("Bounds", "A 2 column matrix specifying the lower and upper bound for each dimension. If there are less rows than dimension the bounds vector is cycled.", new DoubleMatrix(new double[,] { { 0, 5 } })));
59    }
60
61    public override IDeepCloneable Clone(Cloner cloner) {
62      return new StdDevStrategyVectorCreator(this, cloner);
63    }
64
65    public override IOperation Apply() {
66      StrategyParameterParameter.ActualValue = Randomize(RandomParameter.ActualValue, LengthParameter.ActualValue.Value, BoundsParameter.ActualValue);
67      return base.Apply();
68    }
69
70    private DoubleArray Randomize(IRandom random, int length, DoubleMatrix bounds) {
71      var result = new DoubleArray(length);
72      for (int i = 0; i < length; i++) {
73        result[i] = random.NextDouble() * bounds[i % bounds.Rows, 1] - bounds[i % bounds.Rows, 0];
74      }
75      return result;
76    }
77  }
78}
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