[5603] | 1 | using System;
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| 2 | using System.Collections.Generic;
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| 3 | using System.Linq;
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| 4 | using System.Text;
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| 5 | using HeuristicLab.Core;
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| 6 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 7 | using HeuristicLab.Common;
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| 8 | using HeuristicLab.Optimization;
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| 9 | using HeuristicLab.Parameters;
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| 10 | using HeuristicLab.Data;
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| 11 | using HeuristicLab.Analysis;
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| 12 | using HeuristicLab.Random;
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| 13 | using HeuristicLab.Optimization.Operators;
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| 14 | using HeuristicLab.Operators;
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| 15 |
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| 16 | namespace HeuristicLab.Algorithms.VariableNeighborhoodSearch {
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| 17 | [Item("Variable Neighborhood Search", "A variable neighborhood search algorithm.")]
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| 18 | [Creatable("Algorithms")]
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| 19 | [StorableClass]
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| 20 | public sealed class VariableNeighborhoodSearch : EngineAlgorithm, IStorableContent {
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| 21 | public string Filename { get; set; }
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| 22 |
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| 23 | #region Problem Properties
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| 24 | public override Type ProblemType {
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| 25 | get { return typeof(ISingleObjectiveProblem); }
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| 26 | }
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| 27 | public new ISingleObjectiveProblem Problem {
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| 28 | get { return (ISingleObjectiveProblem)base.Problem; }
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| 29 | set { base.Problem = value; }
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| 30 | }
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| 31 | #endregion
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| 32 |
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| 33 | #region Parameter Properties
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| 34 | private ValueParameter<IntValue> SeedParameter {
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| 35 | get { return (ValueParameter<IntValue>)Parameters["Seed"]; }
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| 36 | }
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| 37 | private ValueParameter<BoolValue> SetSeedRandomlyParameter {
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| 38 | get { return (ValueParameter<BoolValue>)Parameters["SetSeedRandomly"]; }
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| 39 | }
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| 40 | public /*Constrained*/ValueParameter<ISingleObjectiveEvaluator> EvaluatorParameter {
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| 41 | get { return (/*Constrained*/ValueParameter<ISingleObjectiveEvaluator>)Parameters["Evaluator"]; }
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| 42 | }
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| 43 | private ValueParameter<ILocalImprovement> LocalImprovementParameter {
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| 44 | get { return (ValueParameter<ILocalImprovement>)Parameters["LocalImprovement"]; }
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| 45 | }
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| 46 | private ValueParameter<ShakingOperator> ShakingParameter {
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| 47 | get { return (ValueParameter<ShakingOperator>)Parameters["Shaking"]; }
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| 48 | }
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| 49 | private ValueParameter<IntValue> MaximumIterationsParameter {
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| 50 | get { return (ValueParameter<IntValue>)Parameters["MaximumIterations"]; }
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| 51 | }
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| 52 | private ValueParameter<MultiAnalyzer> AnalyzerParameter {
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| 53 | get { return (ValueParameter<MultiAnalyzer>)Parameters["Analyzer"]; }
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| 54 | }
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| 55 | #endregion
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| 56 |
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| 57 | #region Properties
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| 58 | private RandomCreator RandomCreator {
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| 59 | get { return (RandomCreator)OperatorGraph.InitialOperator; }
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| 60 | }
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| 61 | #endregion
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| 62 |
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| 63 | [StorableConstructor]
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| 64 | private VariableNeighborhoodSearch(bool deserializing) : base(deserializing) { }
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| 65 | [StorableHook(HookType.AfterDeserialization)]
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| 66 | private void AfterDeserialization() {
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| 67 |
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| 68 | }
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| 69 | private VariableNeighborhoodSearch(VariableNeighborhoodSearch original, Cloner cloner)
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| 70 | : base(original, cloner) {
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| 71 |
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| 72 | }
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| 73 | public override IDeepCloneable Clone(Cloner cloner) {
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| 74 | return new VariableNeighborhoodSearch(this, cloner);
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| 75 | }
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| 76 | public VariableNeighborhoodSearch()
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| 77 | : base() {
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| 78 | Parameters.Add(new ValueParameter<IntValue>("Seed", "The random seed used to initialize the new pseudo random number generator.", new IntValue(0)));
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| 79 | Parameters.Add(new ValueParameter<BoolValue>("SetSeedRandomly", "True if the random seed should be set to a random value, otherwise false.", new BoolValue(true)));
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| 80 | Parameters.Add(new /*Constrained*/ValueParameter<ISingleObjectiveEvaluator>("Evaluator", "The operator used to evaluate the solutions."));
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| 81 | Parameters.Add(new ValueParameter<ILocalImprovement>("LocalImprovement", "The local improvement operation", new LocalSearchImprovement()));
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| 82 | Parameters.Add(new ValueParameter<ShakingOperator>("Shaking", "The shaking operation", new ShakingOperator()));
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| 83 | Parameters.Add(new ValueParameter<IntValue>("MaximumIterations", "The maximum number of generations which should be processed.", new IntValue(1000)));
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| 84 | Parameters.Add(new ValueParameter<MultiAnalyzer>("Analyzer", "The operator used to analyze the solution and moves.", new MultiAnalyzer()));
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| 85 |
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| 86 | RandomCreator randomCreator = new RandomCreator();
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| 87 | SolutionsCreator solutionsCreator = new SolutionsCreator();
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| 88 | VariableCreator variableCreator = new VariableCreator();
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| 89 | ResultsCollector resultsCollector = new ResultsCollector();
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| 90 | VariableNeighborhoodSearchMainLoop mainLoop = new VariableNeighborhoodSearchMainLoop();
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| 91 | OperatorGraph.InitialOperator = randomCreator;
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| 92 |
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| 93 | randomCreator.RandomParameter.ActualName = "Random";
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| 94 | randomCreator.SeedParameter.ActualName = SeedParameter.Name;
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| 95 | randomCreator.SeedParameter.Value = null;
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| 96 | randomCreator.SetSeedRandomlyParameter.ActualName = SetSeedRandomlyParameter.Name;
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| 97 | randomCreator.SetSeedRandomlyParameter.Value = null;
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| 98 | randomCreator.Successor = solutionsCreator;
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| 99 |
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| 100 | solutionsCreator.NumberOfSolutions = new IntValue(1);
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| 101 | solutionsCreator.Successor = variableCreator;
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| 102 |
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| 103 | variableCreator.Name = "Initialize Evaluated Solutions";
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| 104 | variableCreator.CollectedValues.Add(new ValueParameter<IntValue>("EvaluatedSolutions", new IntValue()));
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| 105 | variableCreator.Successor = resultsCollector;
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| 106 |
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| 107 | resultsCollector.CollectedValues.Add(new LookupParameter<IntValue>("Evaluated Solutions", null, "EvaluatedSolutions"));
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| 108 | resultsCollector.ResultsParameter.ActualName = "Results";
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| 109 | resultsCollector.Successor = mainLoop;
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| 110 |
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| 111 | mainLoop.LocalImprovementParameter.ActualName = LocalImprovementParameter.Name;
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| 112 | mainLoop.ShakingParameter.ActualName = ShakingParameter.Name;
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| 113 | mainLoop.EvaluatorParameter.ActualName = EvaluatorParameter.Name;
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| 114 | mainLoop.MaximumIterationsParameter.ActualName = MaximumIterationsParameter.Name;
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| 115 | mainLoop.RandomParameter.ActualName = RandomCreator.RandomParameter.ActualName;
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| 116 | mainLoop.ResultsParameter.ActualName = "Results";
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| 117 | mainLoop.AnalyzerParameter.ActualName = AnalyzerParameter.Name;
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| 118 | mainLoop.EvaluatedSolutionsParameter.ActualName = "EvaluatedSolutions";
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| 119 |
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| 120 | /*Initialize();*/
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| 121 | }
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| 122 | }
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| 123 | }
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