1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using HeuristicLab.Common;
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24 | using HeuristicLab.Core;
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25 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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26 | using HEAL.Attic;
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27 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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28 | [StorableType("5CD355EA-36E4-4E43-B8C4-9E9CF4CBC860")]
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29 | [Item("Constant", "Represents a constant value.")]
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30 | public sealed class Constant : Symbol {
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31 | #region Properties
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32 | [Storable]
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33 | private double minValue;
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34 | public double MinValue {
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35 | get { return minValue; }
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36 | set {
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37 | if (value != minValue) {
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38 | minValue = value;
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39 | OnChanged(EventArgs.Empty);
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40 | }
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41 | }
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42 | }
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43 | [Storable]
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44 | private double maxValue;
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45 | public double MaxValue {
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46 | get { return maxValue; }
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47 | set {
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48 | if (value != maxValue) {
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49 | maxValue = value;
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50 | OnChanged(EventArgs.Empty);
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51 | }
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52 | }
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53 | }
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54 | [Storable]
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55 | private double manipulatorMu;
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56 | public double ManipulatorMu {
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57 | get { return manipulatorMu; }
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58 | set {
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59 | if (value != manipulatorMu) {
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60 | manipulatorMu = value;
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61 | OnChanged(EventArgs.Empty);
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62 | }
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63 | }
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64 | }
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65 | [Storable]
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66 | private double manipulatorSigma;
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67 | public double ManipulatorSigma {
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68 | get { return manipulatorSigma; }
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69 | set {
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70 | if (value < 0) throw new ArgumentException();
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71 | if (value != manipulatorSigma) {
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72 | manipulatorSigma = value;
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73 | OnChanged(EventArgs.Empty);
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74 | }
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75 | }
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76 | }
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77 | [Storable(DefaultValue = 0.0)]
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78 | private double multiplicativeManipulatorSigma;
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79 | public double MultiplicativeManipulatorSigma {
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80 | get { return multiplicativeManipulatorSigma; }
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81 | set {
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82 | if (value < 0) throw new ArgumentException();
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83 | if (value != multiplicativeManipulatorSigma) {
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84 | multiplicativeManipulatorSigma = value;
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85 | OnChanged(EventArgs.Empty);
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86 | }
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87 | }
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88 | }
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89 |
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90 | private const int minimumArity = 0;
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91 | private const int maximumArity = 0;
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92 |
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93 | public override int MinimumArity {
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94 | get { return minimumArity; }
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95 | }
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96 | public override int MaximumArity {
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97 | get { return maximumArity; }
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98 | }
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99 | #endregion
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100 |
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101 | [StorableConstructor]
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102 | private Constant(StorableConstructorFlag _) : base(_) { }
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103 | private Constant(Constant original, Cloner cloner)
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104 | : base(original, cloner) {
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105 | minValue = original.minValue;
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106 | maxValue = original.maxValue;
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107 | manipulatorMu = original.manipulatorMu;
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108 | manipulatorSigma = original.manipulatorSigma;
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109 | multiplicativeManipulatorSigma = original.multiplicativeManipulatorSigma;
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110 | }
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111 | public Constant()
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112 | : base("Constant", "Represents a constant value.") {
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113 | manipulatorMu = 0.0;
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114 | manipulatorSigma = 1.0;
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115 | multiplicativeManipulatorSigma = 0.03;
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116 | minValue = -20.0;
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117 | maxValue = 20.0;
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118 | }
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119 |
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120 | public override ISymbolicExpressionTreeNode CreateTreeNode() {
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121 | return new ConstantTreeNode(this);
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122 | }
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123 |
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124 | public override IDeepCloneable Clone(Cloner cloner) {
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125 | return new Constant(this, cloner);
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126 | }
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127 | }
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128 | }
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