1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2014 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 System.Collections;
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24 | using System.Collections.Generic;
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25 | using System.Linq;
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26 | using System.Runtime.CompilerServices;
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27 | using System.Text;
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28 | using HeuristicLab.Common;
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29 | using HeuristicLab.Core;
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30 | using HeuristicLab.Data;
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31 | using HeuristicLab.Encodings.RealVectorEncoding;
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32 | using HeuristicLab.Optimization;
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33 | using HeuristicLab.Parameters;
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34 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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35 | using HeuristicLab.PluginInfrastructure;
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36 |
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37 | namespace HeuristicLab.Problems.Programmable {
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38 | [Item("RealEncoding", "Describes a real vector encoding.")]
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39 | [StorableClass]
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40 | public sealed class RealEncoding : Encoding {
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41 | #region Encoding Parameters
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42 | [Storable]
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43 | private IFixedValueParameter<IntValue> lengthParameter;
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44 | public IFixedValueParameter<IntValue> LengthParameter {
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45 | get { return lengthParameter; }
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46 | set {
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47 | if (value == null) throw new ArgumentNullException("Length parameter must not be null.");
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48 | if (lengthParameter == value) return;
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49 | lengthParameter = value;
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50 | OnLengthParameterChanged();
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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 IValueParameter<DoubleMatrix> boundsParameter;
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56 | public IValueParameter<DoubleMatrix> BoundsParameter {
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57 | get { return boundsParameter; }
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58 | set {
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59 | if (value == null) throw new ArgumentNullException("Bounds parameter must not be null.");
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60 | if (boundsParameter == value) return;
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61 | boundsParameter = value;
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62 | OnBoundsParameterChanged();
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63 | }
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64 | }
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65 |
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66 | public override IEnumerable<IValueParameter> Parameters {
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67 | get { return base.Parameters.Concat(new IValueParameter[] { LengthParameter, BoundsParameter }); }
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68 | }
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69 | #endregion
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70 |
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71 | private List<IOperator> encodingOperators = new List<IOperator>();
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72 | [Storable]
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73 | public override IEnumerable<IOperator> Operators {
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74 | get { return encodingOperators; }
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75 | protected set { encodingOperators = new List<IOperator>(value); }
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76 | }
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77 |
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78 | public IRealVectorCreator DefaultSolutionCreator {
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79 | get { return Operators.OfType<UniformRandomRealVectorCreator>().First(); }
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80 | }
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81 |
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82 | public int Length {
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83 | get { return LengthParameter.Value.Value; }
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84 | set { LengthParameter.Value.Value = value; }
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85 | }
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86 | public DoubleMatrix Bounds {
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87 | get { return BoundsParameter.Value; }
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88 | set { BoundsParameter.Value = value; }
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89 | }
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90 |
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91 |
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92 |
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93 | [StorableConstructor]
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94 | private RealEncoding(bool deserializing) : base(deserializing) { }
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95 | [StorableHook(HookType.AfterDeserialization)]
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96 | private void AfterDeserialization() {
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97 | RegisterParameterEvents();
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98 | DiscoverOperators();
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99 | }
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100 |
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101 | public override IDeepCloneable Clone(Cloner cloner) { return new RealEncoding(this, cloner); }
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102 | private RealEncoding(RealEncoding original, Cloner cloner)
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103 | : base(original, cloner) {
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104 | lengthParameter = cloner.Clone(original.lengthParameter);
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105 | boundsParameter = cloner.Clone(original.boundsParameter);
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106 | encodingOperators = original.Operators.Select(cloner.Clone).ToList();
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107 | RegisterParameterEvents();
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108 | }
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109 |
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110 |
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111 |
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112 | public RealEncoding(string name, int length, double min, double max)
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113 | : base(name) {
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114 | if (min >= max) throw new ArgumentException("min must be less than max", "min");
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115 |
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116 | var bounds = new DoubleMatrix(1, 2);
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117 | bounds[0, 0] = min;
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118 | bounds[0, 1] = max;
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119 |
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120 | lengthParameter = new FixedValueParameter<IntValue>(Name + "Length", new IntValue(length));
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121 | boundsParameter = new ValueParameter<DoubleMatrix>(Name + "Bounds", bounds);
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122 | RegisterParameterEvents();
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123 | DiscoverOperators();
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124 | }
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125 |
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126 | public RealEncoding(string name, int length, IList<double> min, IList<double> max)
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127 | : base(name) {
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128 | if (min.Count == 0) throw new ArgumentException("Bounds must be given for the real parameters.");
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129 | if (min.Count != max.Count) throw new ArgumentException("min must be of the same length as max", "min");
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130 | if (min.Zip(max, (mi, ma) => mi >= ma).Any(x => x)) throw new ArgumentException("min must be less than max in each dimension", "min");
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131 |
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132 | var bounds = new DoubleMatrix(min.Count, 2);
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133 | for (int i = 0; i < min.Count; i++) {
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134 | bounds[i, 0] = min[i];
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135 | bounds[i, 1] = max[i];
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136 | }
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137 | lengthParameter = new FixedValueParameter<IntValue>(Name + "Length", new IntValue(length));
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138 | boundsParameter = new ValueParameter<DoubleMatrix>(Name + "Bounds", bounds);
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139 | RegisterParameterEvents();
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140 | DiscoverOperators();
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141 | }
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142 |
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143 | private void OnLengthParameterChanged() {
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144 | RegisterLengthParameterEvents();
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145 | ConfigureOperators(Operators);
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146 | }
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147 | private void OnBoundsParameterChanged() {
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148 | RegisterBoundsParameterEvents();
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149 | ConfigureOperators(Operators);
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150 | }
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151 | private void RegisterParameterEvents() {
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152 | RegisterLengthParameterEvents();
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153 | RegisterBoundsParameterEvents();
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154 | }
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155 | private void RegisterLengthParameterEvents() {
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156 | LengthParameter.ValueChanged += (o, s) => ConfigureOperators(Operators);
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157 | LengthParameter.Value.ValueChanged += (o, s) => ConfigureOperators(Operators);
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158 | }
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159 | private void RegisterBoundsParameterEvents() {
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160 | BoundsParameter.ValueChanged += (o, s) => ConfigureOperators(Operators);
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161 | boundsParameter.Value.ToStringChanged += (o, s) => ConfigureOperators(Operators);
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162 | }
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163 |
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164 | #region Operator Discovery
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165 | private static readonly IEnumerable<Type> encodingSpecificOperatorTypes;
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166 | static RealEncoding() {
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167 | encodingSpecificOperatorTypes = new List<Type>() {
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168 | typeof (IRealVectorCreator),
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169 | typeof (IRealVectorCrossover),
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170 | typeof (IRealVectorManipulator),
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171 | typeof (IRealVectorStdDevStrategyParameterOperator),
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172 | typeof (IRealVectorSwarmUpdater),
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173 | typeof (IRealVectorParticleCreator),
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174 | typeof (IRealVectorParticleUpdater),
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175 | typeof (IRealVectorMultiNeighborhoodShakingOperator),
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176 | typeof (IRealVectorBoundsChecker),
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177 | typeof (IRealVectorMoveOperator),
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178 | typeof (IRealVectorMoveGenerator)
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179 | };
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180 | }
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181 | private void DiscoverOperators() {
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182 | var pluginDescription = ApplicationManager.Manager.GetDeclaringPlugin(typeof(IRealVectorOperator));
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183 | var discoveredTypes = ApplicationManager.Manager.GetTypes(encodingSpecificOperatorTypes, pluginDescription, true, false, false);
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184 | var operators = discoveredTypes.Select(t => (IOperator)Activator.CreateInstance(t));
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185 | var newOperators = operators.Except(encodingOperators, new TypeEqualityComparer<IOperator>()).ToList();
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186 |
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187 | ConfigureOperators(newOperators);
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188 | encodingOperators.AddRange(newOperators);
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189 | }
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190 | #endregion
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191 |
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192 | public void ConfigureOperators(IEnumerable<IOperator> operators) {
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193 | ConfigureCreators(operators.OfType<IRealVectorCreator>());
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194 | ConfigureCrossovers(operators.OfType<IRealVectorCrossover>());
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195 | ConfigureManipulators(operators.OfType<IRealVectorManipulator>());
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196 | ConfigureStdDevStrategyParameterOperators(operators.OfType<IRealVectorStdDevStrategyParameterOperator>());
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197 | ConfigureSwarmUpdaters(operators.OfType<IRealVectorSwarmUpdater>());
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198 | ConfigureParticleCreators(operators.OfType<IRealVectorParticleCreator>());
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199 | ConfigureParticleUpdaters(operators.OfType<IRealVectorParticleUpdater>());
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200 | ConfigureShakingOperators(operators.OfType<IRealVectorMultiNeighborhoodShakingOperator>());
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201 | ConfigureBoundsCheckers(operators.OfType<IRealVectorBoundsChecker>());
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202 | ConfigureMoveOperators(operators.OfType<IRealVectorMoveOperator>());
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203 | ConfigureMoveGenerators(operators.OfType<IRealVectorMoveGenerator>());
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204 | }
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205 |
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206 | #region Specific Operator Wiring
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207 | private void ConfigureCreators(IEnumerable<IRealVectorCreator> creators) {
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208 | foreach (var creator in creators) {
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209 | creator.RealVectorParameter.ActualName = Name;
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210 | creator.LengthParameter.ActualName = LengthParameter.Name;
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211 | creator.BoundsParameter.ActualName = BoundsParameter.Name;
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212 | }
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213 | }
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214 | private void ConfigureCrossovers(IEnumerable<IRealVectorCrossover> crossovers) {
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215 | foreach (var crossover in crossovers) {
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216 | crossover.ChildParameter.ActualName = Name;
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217 | crossover.ParentsParameter.ActualName = Name;
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218 | crossover.BoundsParameter.ActualName = BoundsParameter.Name;
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219 | }
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220 | }
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221 | private void ConfigureManipulators(IEnumerable<IRealVectorManipulator> manipulators) {
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222 | foreach (var manipulator in manipulators) {
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223 | manipulator.RealVectorParameter.ActualName = Name;
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224 | manipulator.BoundsParameter.ActualName = BoundsParameter.Name;
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225 | manipulator.BoundsParameter.Hidden = true;
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226 | var sm = manipulator as ISelfAdaptiveManipulator;
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227 | if (sm != null) {
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228 | var p = sm.StrategyParameterParameter as ILookupParameter;
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229 | if (p != null) {
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230 | p.ActualName = Name + "Strategy";
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231 | p.Hidden = true;
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232 | }
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233 | }
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234 | }
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235 | }
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236 | private void ConfigureStdDevStrategyParameterOperators(IEnumerable<IRealVectorStdDevStrategyParameterOperator> strategyOperators) {
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237 | var bounds = (DoubleMatrix)Bounds.Clone();
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238 | for (var i = 0; i < bounds.Rows; i++) {
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239 | bounds[i, 1] = 0.1 * (bounds[i, 1] - bounds[i, 0]);
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240 | bounds[i, 0] = 0;
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241 | }
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242 | foreach (var s in strategyOperators) {
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243 | var c = s as IRealVectorStdDevStrategyParameterCreator;
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244 | if (c != null) {
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245 | c.BoundsParameter.Value = (DoubleMatrix)bounds.Clone();
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246 | c.LengthParameter.ActualName = LengthParameter.Name;
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247 | c.StrategyParameterParameter.ActualName = Name + "Strategy";
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248 | }
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249 | var m = s as IRealVectorStdDevStrategyParameterManipulator;
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250 | if (m != null) {
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251 | m.BoundsParameter.Value = (DoubleMatrix)bounds.Clone();
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252 | m.StrategyParameterParameter.ActualName = Name + "Strategy";
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253 | }
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254 | var mm = s as StdDevStrategyVectorManipulator;
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255 | if (mm != null) {
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256 | mm.GeneralLearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * Length));
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257 | mm.LearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * Math.Sqrt(Length)));
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258 | }
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259 | var x = s as IRealVectorStdDevStrategyParameterCrossover;
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260 | if (x != null) {
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261 | x.ParentsParameter.ActualName = Name + "Strategy";
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262 | x.StrategyParameterParameter.ActualName = Name + "Strategy";
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263 | }
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264 | }
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265 | }
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266 | private void ConfigureSwarmUpdaters(IEnumerable<IRealVectorSwarmUpdater> swarmUpdaters) {
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267 | foreach (var su in swarmUpdaters) {
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268 | su.RealVectorParameter.ActualName = Name;
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269 | }
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270 | }
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271 | private void ConfigureParticleCreators(IEnumerable<IRealVectorParticleCreator> particleCreators) {
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272 | foreach (var particleCreator in particleCreators) {
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273 | particleCreator.RealVectorParameter.ActualName = Name;
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274 | particleCreator.BoundsParameter.ActualName = BoundsParameter.Name;
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275 | particleCreator.ProblemSizeParameter.ActualName = LengthParameter.Name;
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276 | }
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277 | }
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278 | private void ConfigureParticleUpdaters(IEnumerable<IRealVectorParticleUpdater> particleUpdaters) {
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279 | foreach (var particleUpdater in particleUpdaters) {
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280 | particleUpdater.RealVectorParameter.ActualName = Name;
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281 | particleUpdater.BoundsParameter.ActualName = BoundsParameter.Name;
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282 | }
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283 | }
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284 | private void ConfigureShakingOperators(IEnumerable<IRealVectorMultiNeighborhoodShakingOperator> shakingOperators) {
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285 | foreach (var shakingOperator in shakingOperators) {
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286 | shakingOperator.RealVectorParameter.ActualName = Name;
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287 | }
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288 | }
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289 | private void ConfigureBoundsCheckers(IEnumerable<IRealVectorBoundsChecker> boundsCheckers) {
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290 | foreach (var boundsChecker in boundsCheckers) {
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291 | boundsChecker.RealVectorParameter.ActualName = Name;
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292 | boundsChecker.BoundsParameter.ActualName = BoundsParameter.Name;
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293 | }
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294 | }
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295 | private void ConfigureMoveOperators(IEnumerable<IRealVectorMoveOperator> moveOperators) {
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296 | foreach (var moveOperator in moveOperators)
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297 | moveOperator.RealVectorParameter.ActualName = Name;
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298 | }
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299 |
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300 | private void ConfigureMoveGenerators(IEnumerable<IRealVectorMoveGenerator> moveGenerators) {
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301 | foreach (var moveGenerator in moveGenerators)
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302 | moveGenerator.BoundsParameter.ActualName = BoundsParameter.Name;
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303 | }
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304 | #endregion
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305 | }
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306 | } |
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