[11484] | 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.Generic;
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| 24 | using System.Linq;
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| 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Data;
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[11559] | 28 | using HeuristicLab.Encodings.IntegerVectorEncoding;
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[11561] | 29 | using HeuristicLab.Optimization;
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[11588] | 30 | using HeuristicLab.Parameters;
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[11484] | 31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[11561] | 32 | using HeuristicLab.PluginInfrastructure;
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[11484] | 33 |
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| 34 | namespace HeuristicLab.Problems.Programmable {
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| 35 | [Item("IntegerEncoding", "Describes an integer vector encoding.")]
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| 36 | [StorableClass]
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[11559] | 37 | public class IntegerEncoding : Encoding<IIntegerVectorCreator> {
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[11561] | 38 | #region Encoding Parameters
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| 39 | private IFixedValueParameter<IntValue> lengthParameter;
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| 40 | public IFixedValueParameter<IntValue> LengthParameter {
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| 41 | get { return lengthParameter; }
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[11484] | 42 | set {
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[11561] | 43 | if (value == null) throw new ArgumentNullException("Length parameter must not be null.");
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[11588] | 44 | if (value.Value == null) throw new ArgumentNullException("Length parameter value must not be null.");
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[11561] | 45 | if (lengthParameter == value) return;
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[11588] | 46 |
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| 47 | if (lengthParameter != null) Parameters.Remove(lengthParameter);
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[11561] | 48 | lengthParameter = value;
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[11588] | 49 | Parameters.Add(lengthParameter);
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[11561] | 50 | OnLengthParameterChanged();
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[11484] | 51 | }
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| 52 | }
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| 53 |
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[11561] | 54 | private IValueParameter<IntMatrix> boundsParameter;
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| 55 | public IValueParameter<IntMatrix> BoundsParameter {
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| 56 | get { return boundsParameter; }
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[11484] | 57 | set {
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[11561] | 58 | if (value == null) throw new ArgumentNullException("Bounds parameter must not be null.");
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| 59 | if (boundsParameter == value) return;
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[11588] | 60 |
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| 61 | if (boundsParameter != null) Parameters.Remove(boundsParameter);
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[11561] | 62 | boundsParameter = value;
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[11588] | 63 | Parameters.Add(boundsParameter);
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[11561] | 64 | OnBoundsParameterChanged();
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[11484] | 65 | }
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| 66 | }
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[11561] | 67 | #endregion
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| 68 |
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| 69 | public int Length {
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| 70 | get { return LengthParameter.Value.Value; }
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| 71 | set { LengthParameter.Value.Value = value; }
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| 72 | }
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| 73 | public IntMatrix Bounds {
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| 74 | get { return BoundsParameter.Value; }
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| 75 | set { BoundsParameter.Value = value; }
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| 76 | }
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| 77 |
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[11484] | 78 | [StorableConstructor]
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| 79 | protected IntegerEncoding(bool deserializing) : base(deserializing) { }
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[11561] | 80 | [StorableHook(HookType.AfterDeserialization)]
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| 81 | private void AfterDeserialization() {
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| 82 | RegisterParameterEvents();
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| 83 | DiscoverOperators();
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| 84 | }
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| 85 |
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[11484] | 86 | protected IntegerEncoding(IntegerEncoding original, Cloner cloner)
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| 87 | : base(original, cloner) {
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[11561] | 88 | lengthParameter = cloner.Clone(original.lengthParameter);
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| 89 | boundsParameter = cloner.Clone(original.boundsParameter);
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| 90 | RegisterParameterEvents();
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[11484] | 91 | }
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[11561] | 92 | public override IDeepCloneable Clone(Cloner cloner) { return new IntegerEncoding(this, cloner); }
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| 93 |
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[11484] | 94 | public IntegerEncoding(string name, int length, int min, int max, int? step = null)
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| 95 | : base(name) {
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| 96 | if (min >= max) throw new ArgumentException("min must be less than max", "min");
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| 97 | if (step.HasValue && step.Value <= 0) throw new ArgumentException("step must be greater than zero or null", "step");
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[11587] | 98 |
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[11588] | 99 | var bounds = new IntMatrix(1, step.HasValue ? 3 : 2);
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| 100 | bounds[0, 0] = min;
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| 101 | bounds[0, 1] = max;
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| 102 | if (step.HasValue) bounds[0, 2] = step.Value;
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[11587] | 103 |
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[11588] | 104 | LengthParameter = new FixedValueParameter<IntValue>(Name + "Length", new IntValue(length));
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| 105 | BoundsParameter = new ValueParameter<IntMatrix>(Name + "Bounds", bounds);
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| 106 |
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[11587] | 107 | SolutionCreator = new UniformRandomIntegerVectorCreator();
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[11561] | 108 | RegisterParameterEvents();
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| 109 | DiscoverOperators();
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[11484] | 110 | }
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| 111 | public IntegerEncoding(string name, int length, IList<int> min, IList<int> max, IList<int> step = null)
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| 112 | : base(name) {
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| 113 | if (min.Count == 0) throw new ArgumentException("Bounds must be given for the integer parameters.");
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| 114 | if (min.Count != max.Count) throw new ArgumentException("min must be of the same length as max", "min");
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| 115 | if (step != null && min.Count != step.Count) throw new ArgumentException("step must be of the same length as min or null", "step");
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| 116 | 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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[11587] | 117 |
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[11588] | 118 | var bounds = new IntMatrix(min.Count, step != null ? 3 : 2);
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[11484] | 119 | for (int i = 0; i < min.Count; i++) {
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[11588] | 120 | bounds[i, 0] = min[i];
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| 121 | bounds[i, 1] = max[i];
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| 122 | if (step != null) bounds[i, 2] = step[i];
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[11484] | 123 | }
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[11587] | 124 |
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[11588] | 125 | LengthParameter = new FixedValueParameter<IntValue>(Name + "Length", new IntValue(length));
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| 126 | BoundsParameter = new ValueParameter<IntMatrix>(Name + "Bounds", bounds);
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| 127 |
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[11587] | 128 | SolutionCreator = new UniformRandomIntegerVectorCreator();
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[11561] | 129 | RegisterParameterEvents();
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| 130 | DiscoverOperators();
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[11484] | 131 | }
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| 132 |
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[11561] | 133 | private void OnLengthParameterChanged() {
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| 134 | RegisterLengthParameterEvents();
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| 135 | ConfigureOperators(Operators);
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[11484] | 136 | }
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[11561] | 137 | private void OnBoundsParameterChanged() {
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| 138 | RegisterBoundsParameterEvents();
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| 139 | ConfigureOperators(Operators);
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| 140 | }
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[11484] | 141 |
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[11561] | 142 | private void RegisterParameterEvents() {
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| 143 | RegisterLengthParameterEvents();
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| 144 | RegisterBoundsParameterEvents();
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| 145 | }
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| 146 | private void RegisterLengthParameterEvents() {
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| 147 | LengthParameter.ValueChanged += (o, s) => ConfigureOperators(Operators);
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| 148 | LengthParameter.Value.ValueChanged += (o, s) => ConfigureOperators(Operators);
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| 149 | }
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| 150 | private void RegisterBoundsParameterEvents() {
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| 151 | BoundsParameter.ValueChanged += (o, s) => ConfigureOperators(Operators);
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| 152 | boundsParameter.Value.ToStringChanged += (o, s) => ConfigureOperators(Operators);
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| 153 | }
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| 154 |
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| 155 |
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| 156 | #region Operator Discovery
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| 157 | private static readonly IEnumerable<Type> encodingSpecificOperatorTypes;
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| 158 | static IntegerEncoding() {
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| 159 | encodingSpecificOperatorTypes = new List<Type>() {
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| 160 | typeof (IIntegerVectorOperator),
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| 161 | typeof (IIntegerVectorCreator),
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| 162 | typeof (IIntegerVectorCrossover),
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| 163 | typeof (IIntegerVectorManipulator),
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| 164 | typeof (IIntegerVectorStdDevStrategyParameterOperator),
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| 165 | typeof (IIntegerVectorMultiNeighborhoodShakingOperator),
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| 166 | };
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| 167 | }
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| 168 | private void DiscoverOperators() {
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| 169 | var discoveredTypes = ApplicationManager.Manager.GetTypes(encodingSpecificOperatorTypes, true, false, false);
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| 170 | var operators = discoveredTypes.Select(t => (IOperator)Activator.CreateInstance(t));
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[11587] | 171 | var newOperators = operators.Except(Operators, new TypeEqualityComparer<IOperator>()).ToList();
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[11561] | 172 |
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| 173 | ConfigureOperators(newOperators);
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[11587] | 174 | foreach (var @operator in newOperators)
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| 175 | encodingOperators.Add(@operator);
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[11561] | 176 | }
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| 177 | #endregion
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| 178 |
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| 179 | public override void ConfigureOperators(IEnumerable<IOperator> operators) {
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| 180 | ConfigureBoundedOperators(Operators.OfType<IBoundedIntegerVectorOperator>());
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| 181 | ConfigureCreators(Operators.OfType<IIntegerVectorCreator>());
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| 182 | ConfigureCrossovers(Operators.OfType<IIntegerVectorCrossover>());
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| 183 | ConfigureManipulators(Operators.OfType<IIntegerVectorManipulator>());
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| 184 | ConfigureShakingOperators(Operators.OfType<IIntegerVectorMultiNeighborhoodShakingOperator>());
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| 185 | ConfigureStrategyVectorOperator(Operators.OfType<IIntegerVectorStdDevStrategyParameterOperator>());
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| 186 | }
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| 187 |
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| 188 | #region Specific Operator Wiring
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| 189 | private void ConfigureBoundedOperators(IEnumerable<IBoundedIntegerVectorOperator> boundedOperators) {
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| 190 | foreach (var boundedOperator in boundedOperators) {
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| 191 | boundedOperator.BoundsParameter.ActualName = BoundsParameter.Name;
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| 192 | }
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| 193 | }
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| 194 |
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| 195 | private void ConfigureCreators(IEnumerable<IIntegerVectorCreator> creators) {
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| 196 | foreach (var creator in creators) {
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| 197 | creator.IntegerVectorParameter.ActualName = Name;
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| 198 | creator.BoundsParameter.ActualName = BoundsParameter.Name;
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| 199 | creator.LengthParameter.ActualName = LengthParameter.Name;
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| 200 | }
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| 201 | }
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| 202 |
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| 203 | private void ConfigureCrossovers(IEnumerable<IIntegerVectorCrossover> crossovers) {
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| 204 | foreach (var crossover in crossovers) {
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| 205 | crossover.ChildParameter.ActualName = Name;
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| 206 | crossover.ParentsParameter.ActualName = Name;
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| 207 | }
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| 208 | }
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| 209 |
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| 210 | private void ConfigureManipulators(IEnumerable<IIntegerVectorManipulator> manipulators) {
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| 211 | foreach (var manipulator in manipulators) {
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| 212 | manipulator.IntegerVectorParameter.ActualName = Name;
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| 213 | manipulator.IntegerVectorParameter.Hidden = true;
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| 214 | var sm = manipulator as ISelfAdaptiveManipulator;
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| 215 | if (sm != null) {
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| 216 | var p = sm.StrategyParameterParameter as ILookupParameter;
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| 217 | if (p != null) {
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| 218 | p.ActualName = Name + "Strategy";
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| 219 | }
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| 220 | }
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| 221 | }
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| 222 | }
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| 223 |
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| 224 | private void ConfigureShakingOperators(IEnumerable<IIntegerVectorMultiNeighborhoodShakingOperator> shakingOperators) {
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| 225 | foreach (var shakingOperator in shakingOperators) {
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| 226 | shakingOperator.IntegerVectorParameter.ActualName = Name;
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| 227 | }
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| 228 | }
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| 229 |
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| 230 | private void ConfigureStrategyVectorOperator(IEnumerable<IIntegerVectorStdDevStrategyParameterOperator> strategyVectorOperators) {
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| 231 | var bounds = new DoubleMatrix(Bounds.Rows, Bounds.Columns);
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| 232 | for (var i = 0; i < bounds.Rows; i++) {
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| 233 | bounds[i, 1] = (int)Math.Ceiling(0.33 * (Bounds[i, 1] - Bounds[i, 0]));
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| 234 | bounds[i, 0] = 0;
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| 235 | if (bounds.Columns > 2) bounds[i, 2] = Bounds[i, 2];
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| 236 | }
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| 237 | foreach (var s in strategyVectorOperators) {
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| 238 | var c = s as IIntegerVectorStdDevStrategyParameterCreator;
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| 239 | if (c != null) {
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| 240 | c.BoundsParameter.Value = (DoubleMatrix)bounds.Clone();
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| 241 | c.LengthParameter.ActualName = Name;
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| 242 | c.StrategyParameterParameter.ActualName = Name + "Strategy";
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| 243 | }
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| 244 | var m = s as IIntegerVectorStdDevStrategyParameterManipulator;
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| 245 | if (m != null) {
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| 246 | m.BoundsParameter.Value = (DoubleMatrix)bounds.Clone();
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| 247 | m.StrategyParameterParameter.ActualName = Name + "Strategy";
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| 248 | }
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| 249 | var mm = s as StdDevStrategyVectorManipulator;
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| 250 | if (mm != null) {
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| 251 | mm.GeneralLearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * Length));
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| 252 | mm.LearningRateParameter.Value = new DoubleValue(1.0 / Math.Sqrt(2 * Math.Sqrt(Length)));
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| 253 | }
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| 254 | var x = s as IIntegerVectorStdDevStrategyParameterCrossover;
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| 255 | if (x != null) {
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| 256 | x.ParentsParameter.ActualName = Name + "Strategy";
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| 257 | x.StrategyParameterParameter.ActualName = Name + "Strategy";
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| 258 | }
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| 259 | }
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| 260 | }
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| 261 | #endregion
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[11484] | 262 | }
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| 263 | }
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